Year	Mt of CO2 equivalent
1990	-3.629756664617973
1991	-9.04259815443988
1992	-10.79404126260622
1993	-9.438981975710437
1994	-7.143185059521092
1995	-7.211166646036635
1996	-7.620760512156631
1997	-6.660860460106282
1998	-6.9984060609567065
1999	-7.155473530766523
2000	-7.544772609201954
2001	-7.890149674761225
2002	-7.645390005507743
2003	-5.745529118304303
2004	-6.189694694979473
2005	-6.686635240704119
2006	-3.4720703282874945
2007	-0.7299818964224737
2008	-4.7782835335479374
2009	-6.86314683418994