OECD Data

data.oecd.org

Estadísticas comparativas e informes de política entre las economías miembro, con notas metodológicas sólidas.

Because OECD countries report to shared statistical definitions, its numbers compare more cleanly across countries than figures pulled from each country's own national statistics office. The methodology notes attached to each dataset spell out exactly what's counted, which matters when a notebook needs to explain why one country's numbers look different. Coverage skews to wealthier member economies, so it's the wrong source for a question centered on the developing world.