Year	thousand metric tons of CO2 equivalent
1990	23238.680000000004
1991	23737.97
1992	23466.059999999998
1993	23818.05
1994	24081.839999999997
1995	24640.15
1996	25240.459999999992
1997	26037.570000000007
1998	26473.379999999994
1999	27156.280000000002
2000	30656.600000000002
2001	31362.699999999997
2002	32152.700000000008
2003	32824.09999999999
2004	34106.49999999999
2005	35095.49999999999
2006	36173.5
2007	37803.59999999999
2008	39110.49999999999
2009	40624.30000000002
2010	42128.979999999996
2011	43608.579999999994
2012	45621.78000000001
2013	47076.280000000006
2014	48922.98000000001
2015	49621.780000000006
2016	50868.08
2017	52685.58
2018	54667.479999999996
2019	55044.48
2020	52832.48000000002