Year	Mt of CO2 equivalent
1990	-39.69863027820364
1991	-35.61733938315475
1992	-40.22276350100939
1993	-47.46604571790398
1994	-48.8540506883998
1995	-47.822344613647545
1996	-49.4637134273878
1997	-54.146945474821656
1998	-55.07769819241683
1999	-58.13015025801612
2000	-49.05117318821122
2001	-54.67078526406595
2002	-60.26450110993621
2003	-62.4429411486047
2004	-63.87716790134107
2005	-64.8813345343308
2006	-69.3892716245236
2007	-68.51889242148211
2008	-68.90309123521352
2009	-63.92045205396852