Year	thousand metric tons of CO2 equivalent
1990	22591.90795299
1991	24056.662085000004
1992	25150.341138999993
1993	24480.527817000006
1994	24989.647875000006
1995	25785.422670999997
1996	27537.005842000002
1997	31331.007217
1998	32726.628539
1999	33456.89269800001
2000	35172.688968
2001	37126.373246
2002	37963.6534
2003	43494.866509
2004	47019.983968999986
2005	48983.014645
2006	50782.878649
2007	52405.05361499999
2008	55013.05697699999
2009	55254.357363
2010	60203.554667
2011	62345.37772900001
2012	63470.31974900001
2013	63877.011234
2014	64878.867728
2015	63340.378420999994
2016	62003.19532199999
2017	60335.52215199999
2018	59543.24898199999
2019	59501.275811
2020	57590.202642000004