Year	thousand metric tons of CO2 equivalent
1990	21809.411373999996
1991	21088.587903
1992	19166.566834
1993	17409.842152999998
1994	15013.169982999998
1995	14356.145352000005
1996	14098.680797999998
1997	13647.715936999999
1998	13471.552262000003
1999	13193.360505
2000	13265.905909999998
2001	13120.242941
2002	13280.378890000002
2003	13561.485565000003
2004	13852.245036
2005	13925.66232
2006	14809.513942
2007	15090.481913999996
2008	15529.651345
2009	14747.791685999999
2010	15312.907136000002
2011	15940.594657
2012	16271.038354
2013	16114.084973
2014	15736.025603000004
2015	15729.489271999999
2016	16016.230794999996
2017	16406.730794999996
2018	17524.530795000002
2019	18043.330795
2020	17512.730795