Penn World Table (PWT)

rug.nl/ggdc/productivity/pwt

1950 तक देशों के बीच GDP और प्रोडक्टिविटी की तुलना करने के लिए स्टैंडर्ड डेटासेट। डॉक्युमेंटेशन PDF भी साथ लें — यह हर वैरिएबल का मतलब समझाती है।

PWT is the reference economists reach for when comparing GDP, productivity, and price levels across countries, built specifically to make cross-country comparisons valid rather than just aggregating each country's own GDP figures. A notebook comparing economic growth across nations over decades should pull both the data file and the documentation, since the variable definitions matter for interpreting the numbers correctly. It's not updated in real time — releases come on an irregular schedule, so recent years may lag behind sources like the IMF or World Bank.