Year	Mt of CO2 equivalent
1990	-8.556342037970563
1991	-9.108417906051054
1992	-9.58404435635578
1993	-10.101374795079973
1994	-10.850422389898636
1995	-11.210580935978484
1996	-12.006467039150289
1997	-12.56375425164279
1998	-13.279051804353283
1999	-13.848739175730374
2000	-18.529918112604417
2001	-20.396702757040362
2002	-25.060477511109585
2003	-27.8488460748002
2004	-27.181717497338596
2005	-29.612855377862243
2006	-24.237936756209162
2007	-28.279715879798
2008	-34.303190836554734
2009	-25.32849873967888