Add dataset card

README.md

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+---
+pretty_name: ITPD-E R2025 (whole US dollars) with country, industry and gravity lookups
+tags:
+  - economics
+  - international-trade
+  - gravity-model
+size_categories:
+  - 10M<n<100M
+configs:
+  - config_name: trade
+    data_files: ITPD_E_R2025_usd.parquet
+---
+
+# ITPD-E R2025 — compact parquet + lookup tables
+
+A compact, analysis-ready copy of the **USITC International Trade and Production
+Database for Estimation (ITPD-E), release 2025**, plus lookup tables that link it
+to ISO / UN M49 country codes, World Bank income groups and the USITC Dynamic
+Gravity Dataset. It powers the
+[International Trade Explorer](https://mrtimo.github.io/itpde/)
+([source](https://github.com/mrtimo/itpde)).
+
+## Files
+
+| File | Rows | Description |
+|---|---|---|
+| `ITPD_E_R2025_usd.parquet` | 87,537,140 | One row per exporter × importer × industry × year, 1986–2023 (150 MB, zstd) |
+| `lookups/country.csv` | 257 | Country codes used in ITPD-E: ISO 3166-1 alpha-2/3/numeric, former ISO 3166-3 codes, UN M49 regions, LDC/LLDC/SIDS flags, World Bank region/income/lending (current) |
+| `lookups/country_year.csv` | 8,617 | ISO3 + year → ITPD-E/DGD dynamic code and the name used that year |
+| `lookups/country_successor.csv` | 36 | Former countries / aggregates → successor states (e.g. SVU → 15 states) |
+| `lookups/industry.csv` | 170 | ITPD-E industry id → description, broad sector |
+| `lookups/flag_zero.csv` | 3 | Meaning of `flag_zero` (p / r / u) |
+| `lookups/wb_income_group.csv` | 7,661 | World Bank income group by country and GNI year (1987–2023) |
+| `lookups/dgd_country_year.csv` | 8,151 | DGD 2.1 country attributes by year (WTO/GATT/EU membership, GDP, population, polity…), 1986–2019 |
+| `lookups/dgd_pair_year.parquet` | 1,956,949 | DGD 2.1 country-pair attributes by year (distance, contiguity, common language, colonial ties, trade agreements, sanctions), 1986–2019 |
+
+## Main table columns
+
+`exporter_iso3`, `exporter_iso3_dynamic`, `exporter_name`, `importer_iso3`,
+`importer_iso3_dynamic`, `importer_name`, `broad_sector`, `industry_id`,
+`industry_descr`, `year`, `trade`, `flag_mirror`, `flag_zero`.
+
+**`trade` is in whole current US dollars (BIGINT).** ITPD-E publishes millions of
+USD; values were multiplied by 1,000,000 and rounded to the nearest dollar
+(max change $0.50 per row; 99.5% of rows unchanged).
+
+## Joins
+
+- Country attributes: `exporter_iso3` / `importer_iso3` → `lookups/country.csv.iso3`
+- Income group in the trade year: (`iso3`, `year`) → `wb_income_group.csv` (`iso3`, `gni_year`)
+- Gravity, country-year: (`exporter_iso3_dynamic`, `year`) → `dgd_country_year.csv` (`dynamic_code`, `year`)
+- Gravity, pair-year: (`exporter_iso3_dynamic`, `importer_iso3_dynamic`, `year`) → `dgd_pair_year.parquet` (`dynamic_code_o`, `dynamic_code_d`, `year`)
+
+## Caveats
+
+- Domestic flows (exporter = importer) are included: production sold at home. They are complete only through 2021.
+- Coverage: agriculture from 1986, manufacturing and mining & energy from 1988, services from 2000 (source changes in 2004 and 2010).
+- `flag_mirror` ranges 0–407 although documented as 0/1; > 0 means mirror data was used.
+- 11 country codes are not current ISO codes (7 former ISO 3166-3 codes; `SVU`, `BLX`, `ETF`, `FRE` are ITPD-E-specific).
+
+## Sources
+
+- USITC ITPD-E R2025 — https://www.usitc.gov/data/gravity/itpde.htm
+- USITC Dynamic Gravity Dataset 2.1 — https://www.usitc.gov/data/gravity/dgd.htm
+- World Bank country classifications (OGHIST, CLASS) — https://datahelpdesk.worldbank.org/knowledgebase/articles/906519
+- ISO 3166 / UN M49 codes via https://github.com/datasets/country-codes; ISO 3166-3 former codes compiled from Wikipedia
+
+Please cite the original sources when using this data.