claim: The top five countries for passenger aviation-related carbon emissions were rounded out by China, the United Kingdom, Japan, and Germany.
evidence: In Europe, the average airline fuel consumption per passenger in 2017 was 3.4 L / 100 km ( 69 mpg‑US ), 24% less than in 2005, but as the traffic grew by 60% to 1,643 billion passenger kilometres, CO₂ emissions were up by 16% to 163 million tonnes for 99.8 g / km CO₂ per passenger.