Year	thousand metric tons of CO2 equivalent
1990	2726.293386
1991	2780.310689
1992	2967.414793
1993	3054.778296
1994	3013.7634
1995	3307.432504
1996	3513.502612
1997	3440.402321
1998	3333.57083
1999	3710.594138
2000	3391.025247
2001	3211.014074
2002	3373.932102
2003	3526.270129
2004	3687.723157
2005	3626.980784
2006	3985.447091
2007	4126.750397
2008	4149.410903
2009	4356.17061
2010	4322.260916
2011	4537.479758
2012	4322.3258
2013	4336.903841
2014	4322.347283
2015	4584.257925
2016	4361.962991
2017	4888.944856
2018	4823.181722
2019	4834.090588
2020	4784.592654