About this data

Source: Feenstra, Inklaar and Timmer, Penn World Table 11.0 (2025), via Our World in Data

• International dollars adjust for differences in prices between countries (purchasing power parity, PPP), so each dollar buys about the same amount everywhere.
• Output per hour is GDP divided by the total hours worked by everyone in employment.
• Ireland's figure is inflated by the profits of multinational companies, and Norway's by oil and gas.
• Hours worked are measured differently in each country, so small differences shouldn't be read too closely.

This chart appears in Economic growth and productivity.