Year	thousand metric tons of CO2 equivalent
1990	24416.6
1991	24862.2
1992	24479.6
1993	26425.7
1994	27329.7
1995	28581.6
1996	28495.1
1997	30171.2
1998	30351.7
1999	30187.9
2000	29908.7
2001	29743.7
2002	29322
2003	31490.2
2004	32343.5
2005	32496.2
2006	32483.6
2007	33229.9
2008	34100.5
2009	33646.3
2010	33398.3
2011	33177.1
2012	34303.4
2013	34162.3
2014	34614.1
2015	33962.1
2016	33724.5
2017	34610.7
2018	33802.4
2019	33607.7
2020	32251.3