Year	thousand metric tons of CO2 equivalent
1990	22197.9
1991	23560.3
1992	24312.1
1993	24913.1
1994	24784.1
1995	26443.4
1996	26914.9
1997	28580.2
1998	30569.6
1999	30619.8
2000	33071
2001	35227.4
2002	35872.4
2003	35846.9
2004	36273.9
2005	37998.2
2006	38693.3
2007	40927.9
2008	41157.8
2009	42003.6
2010	46291.6
2011	44372.6
2012	45806.8
2013	49049.2
2014	52645.6
2015	54964.5
2016	55003.9
2017	56590.8
2018	56519
2019	60095.3
2020	59586.3