File:Aviation bunker fuel emissions in the 21 highest emitting Annex I countries.jpg

English: "Source: UNFCCC (2020)." "UNFCCC (2020) data shows that a significant share of global emissions from air transport is emitted by a few countries, with only 12 of Annex I countries emitting more than 10 Mt of CO2-eq per year, and 25 countries emitting more than 2 Mt CO2-eq (Fig. 3). The USA alone emits more CO2-eq than the following 10 largest consumers of aviation fuel combined. Two thirds of US emissions (67%) fall on domestic air travel (161.5 Mt CO2-eq, compared to 78.4 Mt CO2-eq used for international air transport). Other countries, due to their size, have very small domestic emissions (Belgium, Netherlands, or Switzerland). China, as the largest non-Annex I emitter, reported 29.6 Mt CO2-eq in 2014 (international bunkers; UNFCCC, 2020)."