From 380c36f733e5979cf10d0cce3925a95101d5d4f4 Mon Sep 17 00:00:00 2001
From: Daniel Miessler <daniel@danielmiessler.com>
Date: Sat, 25 Oct 2025 02:47:08 +0200
Subject: [PATCH] Update DS-00002: U.S. Gross Domestic Product (Real GDP) -
 2025-10-25

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+# U.S. Gross Domestic Product (GDP) - Real GDP Time Series
+
+**Source ID:** DS-00002
+**Record Created:** 2025-10-25
+**Last Updated:** 2025-10-25
+**Cataloger:** Substrate Data Curation
+**Review Status:** Reviewed
+
+---
+
+## Bibliographic Information
+
+### Title Statement
+- **Main Title:** Real Gross Domestic Product (GDPC1, GDPCA)
+- **Subtitle:** Quarterly and Annual U.S. GDP in Chained 2017 Dollars
+- **Abbreviated Title:** Real GDP, GDPC1
+- **Variant Titles:** U.S. Real GDP, Chained-Dollar GDP, Real Gross Domestic Product
+
+### Responsibility Statement
+- **Publisher/Issuing Body:** Federal Reserve Bank of St. Louis (FRED)
+- **Department/Division:** Federal Reserve Economic Data (FRED) Division
+- **Contributors:** Bureau of Economic Analysis (BEA - primary source), U.S. Department of Commerce
+- **Contact Information:** stlsFRED@stls.frb.org
+
+### Publication Information
+- **Place of Publication:** St. Louis, Missouri, USA (FRED); Washington, D.C., USA (BEA)
+- **Date of First Publication:** 1947 (quarterly), 1929 (annual)
+- **Publication Frequency:** Quarterly (with three-stage revision process)
+- **Current Status:** Active
+
+### Edition/Version Information
+- **Current Version:** Continuous updates (quarterly releases + annual comprehensive update)
+- **Version History:** September annual comprehensive updates revise 5+ years of historical data
+- **Versioning Scheme:** Three-stage quarterly revision (advance, second, third estimates) + annual September comprehensive
+
+---
+
+## Authority Statement
+
+### Organizational Authority
+
+**Issuing Organization Analysis:**
+- **Official Name:** Federal Reserve Bank of St. Louis (FRED aggregator); Bureau of Economic Analysis (BEA - primary authority)
+- **Type:** Federal Reserve Bank (FRED); Federal Government Statistical Agency (BEA)
+- **Established:** FRED: 1991; BEA: 1972 (successor to earlier agencies dating to 1945)
+- **Mandate:** Federal Reserve Act (FRED); BEA Act of 1972 - authority to compile, analyze, and publish economic statistics
+- **Parent Organization:** Federal Reserve System (FRED); U.S. Department of Commerce (BEA)
+- **Governance Structure:** Federal Reserve Bank board (FRED); Presidential appointment + Senate confirmation (BEA Director)
+
+**Domain Authority:**
+- **Subject Expertise:** Economic statistics, national accounts, GDP methodology (BEA 50+ years); economic data aggregation (FRED 30+ years)
+- **Recognition:** BEA is U.S. principal statistical agency for economic accounts; FRED aggregates 841,000+ time series from 118 sources
+- **Publication History:** GDP published since 1942 (annual), 1947 (quarterly); FRED since 1991
+- **Peer Recognition:** Federal Reserve, Treasury, Congressional Budget Office, IMF, World Bank, OECD cite BEA GDP; FRED used by millions of researchers
+
+**Quality Oversight:**
+- **Peer Review:** BEA methodology reviewed by National Academies, academic economists
+- **Editorial Board:** BEA Advisory Committee (academic economists, business representatives)
+- **Scientific Committee:** Bureau of Economic Analysis leadership (professional economists)
+- **External Audit:** Subject to Government Accountability Office (GAO) oversight
+- **Certification:** Follows United Nations System of National Accounts (2008 SNA) international standards
+
+**Independence Assessment:**
+- **Funding Model:** Federal appropriations (no commercial interests)
+- **Political Independence:** Professional statistical agency; BEA Director serves under civil service protections
+- **Commercial Interests:** None (federal government mission)
+- **Transparency:** Complete methodology documentation; data vintages preserved; revisions documented
+
+### Data Authority
+
+**Provenance Classification:**
+- **Source Type:** Primary (BEA direct compilation from source data)
+- **Data Origin:** BEA compiles GDP from ~400 source datasets (Census Bureau, IRS tax data, BLS surveys, industry reports)
+- **Chain of Custody:** Source agencies → BEA compilation → National Income and Product Accounts (NIPA) → FRED aggregation → Public access
+
+**Primary Source Characteristics:**
+- BEA is the authoritative U.S. statistical agency for GDP compilation
+- Direct compilation from administrative records, surveys, and other government statistical sources
+- Legal mandate under BEA Act of 1972
+- Follows internationally-recognized System of National Accounts (SNA) framework
+
+---
+
+## Scope Note
+
+### Content Description
+
+**Subject Coverage:**
+- **Primary Subjects:** Macroeconomics, National Accounts, Economic Activity, GDP
+- **Secondary Subjects:** Business Cycles, Economic Growth, Economic Forecasting
+- **Subject Classification:**
+  - LC: HB (Economic Theory), HC (Economic History and Conditions)
+  - Dewey: 330.973 (U.S. Economics)
+- **Keywords:** GDP, Gross Domestic Product, real GDP, economic output, national accounts, NIPA, chained dollars, economic growth, recession, business cycle
+
+**Geographic Coverage:**
+- **Spatial Scope:** United States (50 states + D.C. + territories)
+- **Countries/Regions Included:** United States only
+- **Geographic Granularity:** National aggregate (state-level GDP available in separate BEA datasets)
+- **Coverage Completeness:** 100% of U.S. economic activity
+- **Notable Exclusions:** Underground economy, informal sector estimated but not fully captured
+
+**Temporal Coverage:**
+- **Start Date:** 1947-Q1 (quarterly), 1929 (annual)
+- **End Date:** Present (ongoing quarterly updates)
+- **Historical Depth:** 78+ years (quarterly), 96+ years (annual)
+- **Frequency of Observations:** Quarterly (4 times per year)
+- **Temporal Granularity:** Quarter-level, Annual
+- **Time Series Continuity:** Excellent; continuous data with documented revisions
+
+**Population/Cases Covered:**
+- **Target Population:** All economic activity within United States
+- **Inclusion Criteria:** All goods and services produced within U.S. borders
+- **Exclusion Criteria:** Economic activity outside U.S. borders (even by U.S. firms)
+- **Coverage Rate:** Comprehensive national accounts
+- **Sample vs. Census:** Combination - some components from Census data, others from sample surveys aggregated to national totals
+
+**Variables/Indicators:**
+- **Number of Variables:** 2 primary series (GDPC1 quarterly, GDPCA annual); 100+ related NIPA tables
+- **Core Indicators:**
+  - Real GDP (billions of chained 2017 dollars)
+  - GDP growth rates (quarter-over-quarter, year-over-year)
+  - Quarterly seasonally adjusted values
+  - Annual values (not seasonally adjusted)
+- **Derived Variables:** GDP growth rates, annualized quarterly growth, real per capita GDP
+- **Data Dictionary Available:** Yes - BEA NIPA Handbook
+
+### Content Boundaries
+
+**What This Source IS:**
+- Gold-standard measure of U.S. economic activity
+- Primary indicator used by Federal Reserve for monetary policy
+- Official U.S. government economic statistic
+- Internationally-comparable using UN System of National Accounts framework
+- Best source for understanding U.S. economic trends and business cycles
+
+**What This Source IS NOT:**
+- NOT a measure of economic well-being or quality of life
+- NOT a complete measure of all economic value (excludes household production, volunteer work, environmental costs)
+- NOT adjusted for income distribution or inequality
+- NOT real-time (3-month lag from quarter end to third estimate)
+- NOT granular below national level (use state GDP datasets for subnational analysis)
+
+**Comparison with Similar Sources:**
+
+| Source | Advantages Over This Source | Disadvantages vs. This Source |
+|--------|----------------------------|-------------------------------|
+| GDPNow (Atlanta Fed) | Real-time nowcast (within current quarter) | Not official data; frequently revised; less reliable |
+| World Bank GDP Data | Global coverage; cross-country comparisons | Sources U.S. data from BEA anyway; use BEA directly for U.S. |
+| OECD GDP Data | OECD member comparisons | Sources U.S. data from BEA anyway; use BEA directly for U.S. |
+| Nominal GDP (not real) | Current dollar values for some analyses | Not inflation-adjusted; poor for historical comparisons |
+
+---
+
+## Access Conditions
+
+### Technical Access
+
+**API Information:**
+- **Endpoint URL:** https://fred.stlouisfed.org/graph/fredgraph.csv?id=GDPC1 (quarterly), https://fred.stlouisfed.org/graph/fredgraph.csv?id=GDPCA (annual)
+- **API Type:** Direct CSV download (HTTP GET); also FRED API available
+- **API Version:** FRED API v1
+- **OpenAPI/Swagger Spec:** https://fred.stlouisfed.org/docs/api/fred/
+- **SDKs/Libraries:** Python (fredapi), R (fredr), unofficial libraries for other languages
+
+**Authentication:**
+- **Authentication Required:** No (for CSV); Yes for FRED API
+- **Authentication Type:** API Key (free) for FRED API
+- **Registration Process:** Sign up at https://fredaccount.stlouisfed.org/apikeys
+- **Approval Required:** No (instant API key)
+- **Approval Timeframe:** Immediate
+
+**Rate Limits:**
+- **Requests per Second:** Not documented for CSV download; reasonable use expected
+- **Requests per Day:** FRED API: 120 requests/minute
+- **Concurrent Connections:** Not specified
+- **Throttling Policy:** API enforces rate limits with 429 status code
+- **Rate Limit Headers:** Not provided for CSV; API includes rate limit info
+
+**Query Capabilities:**
+- **Filtering:** CSV downloads full series; FRED API supports date range filtering
+- **Sorting:** Chronological (inherent in time series)
+- **Pagination:** Not applicable (full series download)
+- **Aggregation:** Pre-aggregated quarterly/annual data
+- **Joins:** Not applicable (single time series)
+
+**Data Formats:**
+- **Available Formats:** CSV (direct download), JSON/XML (FRED API)
+- **Format Quality:** Well-formed CSV; UTF-8 encoded; consistent schema
+- **Compression:** Not compressed
+- **Encoding:** UTF-8
+
+**Download Options:**
+- **Bulk Download:** Yes - full CSV download
+- **Streaming API:** No
+- **FTP/SFTP:** No
+- **Torrent:** No
+- **Data Dumps:** Full series download each time (not incremental)
+
+**Reliability Metrics:**
+- **Uptime:** Very high (99.9%+ estimated); Federal Reserve infrastructure
+- **Latency:** <1 second for CSV download
+- **Breaking Changes:** Schema stable for decades; BEA methodology changes documented years in advance
+- **Deprecation Policy:** Federal Reserve commitment to long-term data availability
+- **Service Level Agreement:** No formal SLA (federal government service)
+
+### Legal/Policy Access
+
+**License:**
+- **License Type:** Public Domain (U.S. Government Work)
+- **License Version:** N/A
+- **License URL:** https://www.usa.gov/government-works
+- **SPDX Identifier:** CC0-1.0 (effectively public domain for U.S. government data)
+
+**Usage Rights:**
+- **Redistribution Allowed:** Yes (public domain)
+- **Commercial Use Allowed:** Yes (public domain)
+- **Modification Allowed:** Yes (public domain)
+- **Attribution Required:** Not legally required; citation recommended as scholarly best practice
+- **Share-Alike Required:** No
+
+**Cost Structure:**
+- **Access Cost:** Free
+
+**Terms of Service:**
+- **TOS URL:** https://fred.stlouisfed.org/legal/
+- **Key Restrictions:** No restrictions (public domain); standard disclaimer
+- **Liability Disclaimers:** Federal Reserve not liable for decisions based on data
+- **Privacy Policy:** FRED collects website analytics; no personal data in economic statistics
+
+---
+
+## Source Evaluation Narrative
+
+### Methodological Assessment
+
+**Data Collection Methodology:**
+
+**Sampling Design:**
+- **Method:** Combination - Census data (decennial census, economic census), administrative records (IRS, Social Security), sample surveys (BLS, Census Bureau monthly/quarterly surveys)
+- **Sample Size:** Varies by source dataset (millions of firms for economic census)
+- **Sampling Frame:** Universe of U.S. economic establishments and households
+- **Stratification:** By industry, firm size, geographic region (varies by source data)
+- **Weighting:** Post-stratification weights applied; benchmarking to census years
+
+**Data Collection Instruments:**
+- **Instrument Type:** Administrative records (tax filings), establishment surveys, household surveys
+- **Validation:** BEA applies consistency checks across ~400 source datasets
+- **Question Wording:** Varies by source agency (BLS, Census Bureau, etc.)
+- **Mode:** Administrative data, mail/web surveys, in-person surveys
+
+**Quality Control Procedures:**
+- **Field Supervision:** Varies by source agency (BLS, Census Bureau have extensive QC)
+- **Validation Rules:** BEA cross-validates source datasets; applies balancing identities (e.g., income = expenditure = product approaches must match)
+- **Consistency Checks:** Three independent approaches to GDP (expenditure, income, product) cross-validated
+- **Verification:** Benchmarking to quinquennial economic census
+- **Outlier Treatment:** Statistical methods to identify and investigate outliers
+
+**Error Characteristics:**
+- **Sampling Error:** Varies by component; major components have low sampling error due to census/administrative data
+- **Non-sampling Error:** Coverage gaps (underground economy estimated at ~1-2% of GDP); measurement error in service sector
+- **Known Biases:** Informal economy undercounted; rapid technological change challenges deflation
+- **Accuracy Bounds:** BEA does not publish official confidence intervals; academic estimates suggest ±0.5-1.0% for quarterly growth rates
+
+**Methodology Documentation:**
+- **Transparency Level:** 5/5 (Exemplary)
+- **Documentation URL:** https://www.bea.gov/resources/methodologies/nipa-handbook
+- **Peer Review Status:** BEA methods reviewed by National Academies; published in peer-reviewed journals
+- **Reproducibility:** Methodology fully documented; data sources identified; replication possible with access to source data
+
+### Currency Assessment
+
+**Update Characteristics:**
+- **Update Frequency:** Quarterly (three releases per quarter: advance, second, third estimates)
+- **Update Reliability:** Extremely consistent; releases follow strict schedule (8:30 AM ET)
+- **Update Notification:** BEA release calendar published; FRED email alerts available
+- **Last Updated:** 2025-10-25 (check quarterly after BEA third estimate)
+
+**Timeliness:**
+- **Collection to Publication Lag:** ~30 days (advance), ~60 days (second), ~90 days (third estimate)
+- **Factors Affecting Timeliness:** Availability of source data from partner agencies; quality review process
+- **Historical Timeliness:** Consistent three-stage release process maintained for decades
+
+**Currency for Different Uses:**
+- **Real-time Analysis:** Unsuitable (3-month lag to third estimate); use GDPNow for nowcasting
+- **Recent Trends:** Excellent (quarterly updates capture trends within 1-3 months)
+- **Historical Research:** Excellent (continuous series 1947-present quarterly, 1929-present annual)
+
+### Objectivity Assessment
+
+**Potential Biases:**
+
+**Political Bias:**
+- **Government Influence:** Statistical agency independence protected by professional standards; BEA Director serves under civil service
+- **Editorial Stance:** Professional statistical neutrality mandated
+- **Political Pressure:** Rare instances of political commentary on GDP; methodology insulated from political pressure
+
+**Commercial Bias:**
+- **Funding Sources:** Federal appropriations (no commercial interests)
+- **Advertising Influence:** Not applicable
+- **Proprietary Interests:** None
+
+**Cultural/Social Bias:**
+- **Geographic Bias:** National aggregates mask regional differences
+- **Social Perspective:** Market-based production; excludes household production, volunteer work
+- **Language Bias:** English-language documentation
+- **Selection Bias:** Market economy focus; informal/underground economy estimated but not directly measured
+
+**Transparency:**
+- **Bias Disclosure:** BEA acknowledges measurement challenges (services deflation, underground economy, etc.)
+- **Limitations Stated:** Comprehensive in methodology documentation
+- **Raw Data Available:** Aggregated data; underlying source data from partner agencies
+
+### Reliability Assessment
+
+**Consistency:**
+- **Internal Consistency:** Three approaches to GDP (expenditure, income, product) must reconcile; statistical discrepancy published
+- **Temporal Consistency:** Time series maintained with documented revisions; chained-dollar methodology ensures comparability
+- **Cross-source Consistency:** BEA GDP corroborated by independent indicators (employment, industrial production, income)
+
+**Stability:**
+- **Definition Changes:** Rare major methodology changes (2013: comprehensive revision; 2018: adoption of 2008 SNA); changes documented years in advance
+- **Methodology Changes:** Annual comprehensive updates each September refine historical estimates
+- **Series Breaks:** Clearly documented when methodology changes; historical data revised for consistency
+
+**Verification:**
+- **Independent Verification:** Academic economists validate BEA methods; international organizations (IMF, OECD) review U.S. national accounts
+- **Replication Studies:** Multiple academic papers use BEA GDP; discrepancies investigated and resolved
+- **Audit Results:** GAO reviews BEA processes; no major data quality issues identified
+
+### Accuracy Assessment
+
+**Validation Evidence:**
+- **Benchmark Comparisons:** Benchmarked to quinquennial economic census (high accuracy)
+- **Coverage Assessments:** Estimated 98-99% coverage of market-based production
+- **Error Studies:** Academic research suggests quarterly growth rate accuracy ±0.5-1.0 percentage points
+
+**Accuracy for Different Uses:**
+- **Point Estimates:** High reliability for quarterly/annual GDP levels
+- **Trend Analysis:** Extremely reliable for medium-term trends (1+ years)
+- **Cross-sectional Comparison:** Reliable for comparing U.S. to other countries using SNA framework
+- **Sub-population Analysis:** Not available (national aggregates only; use state GDP for subnational)
+
+---
+
+## Known Limitations and Caveats
+
+### Coverage Limitations
+
+**Geographic Gaps:**
+- National aggregates only (no subnational detail in this series)
+- U.S. territories (Puerto Rico, Guam, etc.) reported separately
+
+**Temporal Gaps:**
+- Pre-1929 data not official BEA compilation (use MeasuringWorth for 1790-1928 estimates)
+
+**Population Exclusions:**
+- Underground economy (estimated at 1-2% of GDP) only partially captured
+- Household production (home cooking, childcare, etc.) not included
+- Volunteer work not included
+
+**Variable Gaps:**
+- No demographic breakdowns (by income, race, age)
+- No distributional measures (GDP per capita available but not by income group)
+- Environmental costs not deducted from GDP
+
+### Methodological Limitations
+
+**Sampling Limitations:**
+- Smaller industries/services may have larger sampling error
+- New industries (tech, gig economy) measurement challenges
+
+**Measurement Limitations:**
+- Service sector deflation challenging (quality improvements hard to price)
+- Rapid technological change complicates inflation adjustment
+- Software, R&D valuation subjective
+
+**Processing Limitations:**
+- Quarterly data seasonally adjusted (removes seasonal patterns but introduces estimation)
+- Chained-dollar method creates non-additive components
+- Revisions can be substantial (advance vs. third estimate)
+
+### Comparability Limitations
+
+**Cross-national Comparability:**
+- Different countries use SNA framework but implementation varies
+- Exchange rate fluctuations complicate international comparisons
+- PPP adjustments needed for cross-country living standard comparisons
+
+**Temporal Comparability:**
+- Methodology changes (2013 comprehensive revision major) create series breaks
+- Chained-dollar base year updated periodically (currently 2017)
+
+**Sub-group Comparability:**
+- National aggregates cannot be disaggregated by demographics
+
+### Usage Caveats
+
+**Inappropriate Uses:**
+1. **DO NOT use GDP as sole measure of well-being** - use broader indicators (HDI, median income, etc.)
+2. **DO NOT assume GDP growth benefits all equally** - use distributional data (Census income statistics)
+3. **DO NOT use for real-time nowcasting** - use GDPNow or other nowcasting models
+4. **DO NOT use for subnational analysis** - use state/metro GDP datasets from BEA
+
+**Ecological Fallacy Risks:**
+- National GDP growth does not imply all households/regions benefited
+- Aggregate growth can mask rising inequality
+
+**Correlation vs. Causation:**
+- GDP is descriptive (what was produced), not explanatory (why it was produced)
+- Associations with other variables do not imply causation
+
+---
+
+## Recommended Use Cases
+
+### Ideal Applications
+
+**Research Questions Well-Suited:**
+1. "How has U.S. economic output changed over time?"
+2. "Was the U.S. in a recession during a specific period?"
+3. "How do different presidential administrations compare on economic growth?"
+4. "What was the economic impact of major events (9/11, COVID-19, financial crisis)?"
+
+**Analysis Types Supported:**
+- Time series trend analysis
+- Business cycle identification
+- Economic growth comparisons across periods
+- Recession dating and severity assessment
+- Policy impact analysis (fiscal stimulus, tax changes)
+- Forecasting and econometric modeling
+
+### Appropriate Contexts
+
+**Geographic Contexts:**
+- U.S. national-level economic analysis
+- International comparisons (U.S. vs. other countries)
+
+**Temporal Contexts:**
+- Quarterly analysis (1947-present)
+- Annual analysis (1929-present)
+- Long-term growth trends (multiple decades)
+
+**Subject Contexts:**
+- Macroeconomic research
+- Business cycle analysis
+- Economic policy evaluation
+- Financial market analysis
+
+### Use Warnings
+
+**Avoid Using This Source For:**
+1. **Income distribution analysis** → Use Census Bureau income statistics
+2. **Subnational economic analysis** → Use BEA state GDP, metro GDP datasets
+3. **Real-time nowcasting** → Use Atlanta Fed GDPNow
+4. **Well-being measurement** → Use Human Development Index, Genuine Progress Indicator
+5. **Individual household economic status** → Use microdata from Census, BLS surveys
+
+**Recommended Alternatives For:**
+- Income inequality → Census Bureau, IRS Statistics of Income
+- State/regional economies → BEA Regional GDP data
+- Real-time economic activity → GDPNow, weekly economic indicators
+- International GDP → OECD, World Bank (for other countries)
+- Sectoral detail → BEA NIPA detailed tables
+
+---
+
+## Citation
+
+### Preferred Citation Format
+
+**APA 7th:**
+U.S. Bureau of Economic Analysis. (2025). *Real Gross Domestic Product* [GDPC1], retrieved from FRED, Federal Reserve Bank of St. Louis. https://fred.stlouisfed.org/series/GDPC1
+
+**Chicago 17th:**
+U.S. Bureau of Economic Analysis. "Real Gross Domestic Product [GDPC1]." FRED, Federal Reserve Bank of St. Louis. Accessed October 25, 2025. https://fred.stlouisfed.org/series/GDPC1.
+
+**MLA 9th:**
+U.S. Bureau of Economic Analysis. *Real Gross Domestic Product* [GDPC1]. FRED, Federal Reserve Bank of St. Louis, 2025, fred.stlouisfed.org/series/GDPC1.
+
+**Vancouver:**
+U.S. Bureau of Economic Analysis. Real Gross Domestic Product [GDPC1] [Internet]. St. Louis: FRED, Federal Reserve Bank of St. Louis; 2025 [cited 2025 Oct 25]. Available from: https://fred.stlouisfed.org/series/GDPC1
+
+**BibTeX:**
+```bibtex
+@misc{bea_gdp_2025,
+  author = {{U.S. Bureau of Economic Analysis}},
+  title = {Real Gross Domestic Product [GDPC1]},
+  year = {2025},
+  howpublished = {FRED, Federal Reserve Bank of St. Louis},
+  url = {https://fred.stlouisfed.org/series/GDPC1},
+  note = {Accessed: 2025-10-25}
+}
+```
+
+---
+
+## Cross-Reference Section Structure
+
+**Supports Claims:**
+- (none yet - can be added later by entry maintainers)
+
+**Documents Problems:**
+- (none yet - can be added later by entry maintainers)
+
+**Informs Arguments:**
+- (none yet - can be added later by entry maintainers)
+
+**Used in Projects:**
+- (none yet - can be added later by entry maintainers)
+
+*Cross-references can be added by entry maintainers as needed.*
+
+---
+
+**END OF SOURCE RECORD**
diff --git a/Data/US-GDP/update.log b/Data/US-GDP/update.log
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+[2025-10-25T00:47:07.485Z] === Update Started ===
+[2025-10-25T00:47:07.485Z] Source: U.S. Gross Domestic Product (Real GDP)
+[2025-10-25T00:47:07.485Z] Source ID: DS-00002
+[2025-10-25T00:47:07.485Z] Checking source availability...
+[2025-10-25T00:47:07.485Z] Source is available
+[2025-10-25T00:47:07.485Z] Fetching Quarterly Real GDP (GDPC1) data...
+[2025-10-25T00:47:07.485Z] Quarterly Real GDP (GDPC1) schema validation passed
+[2025-10-25T00:47:07.485Z] Quarterly Real GDP (GDPC1) first record: 1947-01-01,2182.681
+[2025-10-25T00:47:07.485Z] Quarterly Real GDP (GDPC1) last record: 2025-04-01,23770.976
+[2025-10-25T00:47:07.485Z] Quarterly Real GDP (GDPC1): 314 records retrieved
+[2025-10-25T00:47:07.485Z] Fetching Annual Real GDP (GDPCA) data...
+[2025-10-25T00:47:07.485Z] Annual Real GDP (GDPCA) schema validation passed
+[2025-10-25T00:47:07.485Z] Annual Real GDP (GDPCA) first record: 1929-01-01,1191.124
+[2025-10-25T00:47:07.485Z] Annual Real GDP (GDPCA) last record: 2024-01-01,23358.435
+[2025-10-25T00:47:07.485Z] Annual Real GDP (GDPCA): 96 records retrieved
+[2025-10-25T00:47:07.485Z] Performing data quality checks...
+[2025-10-25T00:47:07.485Z] Quality checks passed
+[2025-10-25T00:47:07.485Z] Saving data files...
+[2025-10-25T00:47:07.485Z] Quarterly data saved to: /Users/daniel/Library/Mobile Documents/com~apple~CloudDocs/Projects/Substrate/Data/US-GDP/Real-GDP-Quarterly-1947-2025.csv
+[2025-10-25T00:47:07.485Z] Annual data saved to: /Users/daniel/Library/Mobile Documents/com~apple~CloudDocs/Projects/Substrate/Data/US-GDP/Real-GDP-Annual-1929-2024.csv
+[2025-10-25T00:47:07.485Z] Updating source record...
+[2025-10-25T00:47:07.485Z] Source record updated
+[2025-10-25T00:47:07.485Z] 
+Update Summary:
+- Timestamp: 2025-10-25T00:47:07.485Z
+- Availability: OK
+- Data Quality: PASSED
+- Quarterly Records: 314
+- Annual Records: 96
+- Quarterly File Size: 6.29 KB
+- Annual File Size: 1.93 KB
+
+[2025-10-25T00:47:07.485Z] Checking for git repository...
+[2025-10-25T00:47:07.485Z] Git repository detected - committing changes...