Year	Mt of CO2 equivalent
1990	-1.9496790393516186
1991	-2.251998526708175
1992	-3.320160905411257
1993	-5.2807009755089185
1994	-5.748947812377255
1995	-5.7813842230043795
1996	-1.8645826077288763
1997	-2.033570889707645
1998	-3.063864731901319
1999	-1.4325565661705153
2000	-0.3637733031633457
2001	-1.7074845327960733
2002	-0.9060064803297228
2003	-3.068248748714044
2004	-2.128899038321439
2005	-4.221097761100134
2006	-2.2891570589887595
2007	-2.688326667096212
2008	-3.9333892573788143
2009	-3.0185981574016765