China vs USSR: Share of global CO₂ emissions and population

China

6.2%

in 2100

USSR

5.4%

in 1991

China rank

2nd

USSR rank

1st

Share of global CO₂ emissions and population over time

China currently reports 6.2% against 5.4% in USSR, a difference of 0.8%.

That makes China's figure about 1.2 times USSR's.

Across all 209 years both countries report, China has been ahead every year.

China ranks 2nd and USSR ranks 1st of 234 countries.

Indicator: Share of global CO₂ emissions and population
Unit: %
Source: HYDE (2023); Gapminder (2022); UN WPP (2024) – with major processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 239 places, 69,170 data points, 1000–2100
Last refreshed: 07 August 2026

Share of the world's population by country, available from 10,000 BCE to 2100, based on data and estimates from different sources.