Year	Mt of CO2 equivalent
1990	-2.49610676934452
1991	-2.5886216828897397
1992	-2.8558884409601966
1993	-3.2156566982046617
1994	-2.8389809691195365
1995	-3.198710343879784
1996	-2.785280906917656
1997	-2.8327108587238463
1998	-3.109438609529948
1999	-3.326847514059403
2000	-2.836477996036862
2001	-3.103038422386161
2002	-3.219201268760292
2003	-2.904011423392737
2004	-3.071169326133753
2005	-3.051402765771869
2006	-3.138710146522803
2007	-2.9336585233655015
2008	-3.0792694558339746
2009	-3.0185628100205144