GNI and GDP per unit correlate
Comparing GNI (current LCU) with GDP (constant LCU), per unit of GDP across 205 countries, 2011–2025.
- Rank correlation
- +0.70
- Holding size constant
- +0.80
- Countries compared
- 205
- Period
- 2011–2025
What might link these
The correlation between GNI and GDP per unit may be driven by factors such as economic efficiency or sectoral composition. A careful reader should be cautious about assuming causality and consider potential confounders like inflation rates. Additionally, differences in national accounting practices could influence the results.
Why this is not proof of anything
This is a correlation across countries, not an experiment. It cannot show that either indicator causes the other, and both may simply follow a third thing. This correlation could mislead by implying a direct causal relationship between GNI and GDP per unit, when in fact other underlying factors may be driving the association.
The second figure above repeats the measurement with national population and income held constant. It is the more conservative number: a relationship that largely disappears there was mostly telling you that larger, richer countries have more of most things.
How this was measured
Both indicators were ranked across every country reporting each, and the two rankings compared — ranks rather than raw values, because a handful of very large countries can otherwise manufacture a relationship on their own. The calculation is arithmetic over figures already published on this site; the commentary above is drafted from the two indicator names and the resulting coefficients.