GHG
Emissions 2009 (million tonnes):number
Emissions 1990 (million tonnes):number
Emissions 1950 (million tonnes):number
CO2
1.76
1.288732214
0.594955859
CH4
0.502
0.470354525
0.235243101
N2O
0.172
0.129200535
0.064408219
PFC,HFC,SF6
0.015
0.0111088
0
Montreal gasses
0.26
0.229976021
0