Year	Mt of CO2 equivalent
1990	-23.451074984720332
1991	-24.116412378037456
1992	-23.28779365278581
1993	-23.517722023234736
1994	-22.817199743086213
1995	-21.967344610081067
1996	-22.174166789212848
1997	-23.674111596264044
1998	-25.956393124303275
1999	-26.8585076748124
2000	-26.71486661767237
2001	-26.04810409317034
2002	-23.579722130141636
2003	-25.289274320119862
2004	-26.511616674150172
2005	-25.54275787961805
2006	-23.728062922717406
2007	-21.45999987291272
2008	-29.36013612290295
2009	-26.682747785064766