Year	Mt of CO2 equivalent
1990	-69.92208185436314
1991	-77.73915066783165
1992	-64.42580868769512
1993	-49.03381070011978
1994	-61.651520138929676
1995	-48.32293525015679
1996	-53.79370913102549
1997	-33.83048094310629
1998	-48.51113339136527
1999	-61.810783374574385
2000	-48.7819931505948
2001	-37.66081520735272
2002	-37.63628305564064
2003	-57.26361762147369
2004	-38.173794590375124
2005	-36.23922719748347
2006	-39.108783406865996
2007	-50.98453002423426
2008	-17.24592424770853
2009	-19.244650358101914