Year	Mt of CO2 equivalent
1990	-15.19642176731722
1991	-16.857002127574248
1992	-17.98026435179838
1993	-17.615324798867114
1994	-16.94658142659271
1995	-16.249899097283645
1996	-17.713575566170515
1997	-15.119342277042124
1998	-14.075306386014013
1999	-13.561374392527107
2000	-14.300098898078152
2001	-14.518664795812462
2002	-13.530927121339372
2003	-15.023944973683202
2004	-16.180633396973146
2005	-17.140524533826547
2006	-20.25155183687356
2007	-21.682917208102438
2008	-22.743398786413078
2009	-20.483741671980827