Based on a comparison of 175 countries in 2014, China ranked the highest in CO2 emissions with 10,291,927 kt followed by USA and India. On the other end of the scale was Liechtenstein with 44.0 kt, Comoros with 154 kt and Guinea Bissau with 271 kt.
Total CO2 emissions reached 36,138,285 kt in 2014 in the World according to World Bank / EIA. This is 0.802 % more than in the previous year and 21.5 % more than 10 years ago.
Historically, total CO2 emissions reached an all time high of 36,138,285 kt in 2014 and an all time low of 9,385,793 kt in 1960. The average annual growth amounted to 2.53 % since 1960.
The top ranked country, China, accounted for 28.5 % of CO2 emissions in the world. The top 3 countries hold a 49.2 % share while the ten largest countries some 65.9 % in 2014.
Data for more countries are available at CO2 Emissions (Total) indicator page.