Year	thousand metric tons of CO2 equivalent
1990	3642.120286
1991	3476.760336
1992	3762.253927
1993	3559.185329
1994	3441.674628
1995	3237.67279
1996	3210.600246
1997	3170.458952
1998	2906.837149
1999	2842.611108
2000	2837.390808
2001	2837.829338
2002	2787.389016
2003	2789.660039
2004	2776.592764
2005	2728.951786
2006	2742.989552
2007	2704.890623
2008	2635.87988
2009	2693.112719
2010	2632.25424
2011	2567.282274
2012	2512.821831
2013	2512.424281
2014	2473.79743
2015	2405.677064
2016	2199.419561
2017	2235.520546
2018	2257.921531
2019	2265.622516
2020	2204.623501