Year	thousand metric tons of CO2 equivalent
1990	17405.7
1991	18417.3
1992	17447.6
1993	18759.3
1994	18934
1995	19309
1996	19160.3
1997	18688
1998	18189
1999	18882.3
2000	17094.1
2001	17798.3
2002	18370.8
2003	19237.5
2004	19028.4
2005	21770.8
2006	22471.7
2007	23141.2
2008	23963.2
2009	24047.8
2010	23679.9
2011	23647.6
2012	24635.2
2013	23443.8
2014	23764.4
2015	22740.3
2016	23318.6
2017	24575.9
2018	26273
2019	26813.3
2020	25357.6