Countries with a higher share of teenage girls tend to have weaker local currencies relative to the US dollar.
Comparing DEC alternative conversion factor (LCU per US$) with Population ages 15-19, female, per capita across 214 countries, 2025–2025.
- Rank correlation
- +0.55
- Holding size constant
- +0.44
- Countries compared
- 214
- Period
- 2025–2025
What might link these
A younger female age structure often occurs in lower‑income economies, which frequently exhibit higher local‑currency‑per‑USD exchange rates. While the partial correlation controls for population and GDP, other development‑related factors (e.g., overall productivity, trade openness) may still drive both patterns.
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. The observed link may reflect a broader socioeconomic development gradient rather than a direct causal relationship between youth demographics and currency valuation.
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.