Year	thousand metric tons of CO2 equivalent
1990	13237.3
1991	13946.2
1992	13867.5
1993	13427
1994	12930.2
1995	13667.3
1996	14748.2
1997	17109
1998	17827.3
1999	19065.6
2000	21410.9
2001	22712.9
2002	28525.9
2003	30421
2004	34379.6
2005	36714
2006	38436
2007	39455
2008	42239.6
2009	44303.4
2010	44765.1
2011	46890.1
2012	46181.5
2013	47493.6
2014	46397.5
2015	43645.4
2016	43008.7
2017	47011.1
2018	49297.9
2019	46100.6
2020	46865.7