Year	Mt of CO2 equivalent
1990	-1.5566248386280053
1991	-0.9403998968572732
1992	-1.25405754846556
1993	-1.202232868706355
1994	-1.2449018405846408
1995	-1.0991785469821629
1996	-1.1662810039901526
1997	-1.2049945942412086
1998	-1.1221500335751466
1999	-1.1727119043704435
2000	-1.1594333222105575
2001	-1.8035156637496366
2002	-1.6279169681280572
2003	-1.7033646852943096
2004	-1.6115552332799694
2005	-1.6497261691800769
2006	-1.6371335760418022
2007	-1.611809951069979
2008	-1.5559946914713862
2009	-1.6002542750046012