Single-variable Penn World Table time series for one country

GET

/api/v1/research/pwt/country/{iso3}/{variable}

Last modified:2026-05-10 09:22:39

Maintainer:Not configured

OperationId:research_pwt_country_iso3_variable

Returns a lean (year, value) series for one Penn World Table variable for one ISO 3166-1 alpha-3 coded country. Useful for charting a single metric over time without pulling the full 47-column panel. The variable name must match a Penn World Table column exactly. Popular picks: rgdpo (output-side real GDP), rgdpe (expenditure side), cn (capital stock), hc (human capital index), ctfp (TFP level), labsh (labor share of income). Call /api/v1/research/pwt/definitions for the complete variable dictionary. Published under CC BY 4.0 with attribution to Penn World Table (Feenstra, Inklaar & Timmer, University of Groningen).

Request

Authorization

API Key

Add parameter in header

x-api-key

Example:

x-api-key: ********************

Path Params

Query Params

Header Params

Request Code Samples

Shell

JavaScript

Java

Swift

PHP

Python

HTTP

Objective-C

Ruby

OCaml

Dart

curl --location '/api/v1/research/pwt/country/USA/rgdpo?start_year=1970&end_year=2023&version=pwt1100' \
--header 'x-api-key: <api-key>'

Responses

🟢200

application/json

Year-value pairs for one variable plus variable description and type.

Bodyapplication/json

Example

{
    "data": {
        "version": "pwt1100",
        "countrycode": "USA",
        "country": "string",
        "variable": "rgdpo",
        "description": "string",
        "type": "string",
        "observations": [
            {
                "year": 2020,
                "value": 0
            }
        ],
        "count": 74,
        "start_year": 0,
        "end_year": 0,
        "attribution": "string"
    },
    "meta": {
        "endpoint": "/api/v1/fred/us/cpi",
        "data_time": "2026-04-16T14:30:00Z",
        "response_time": "2026-04-16T14:30:12Z",
        "provider": "Sugra API v1.0.1",
        "source": "string",
        "fallback_used": true,
        "fallback_chain": [
            "string"
        ],
        "cached": true
    }
}

🟠401

🟠422

🟠429

🔴503

Modified at 2026-05-10 09:22:39

Full Penn World Table time series for one country

Top-N countries ranked by a Penn World Table variable