Year	thousand metric tons of CO2 equivalent
1990	12580.915
1991	12310.92
1992	12213.185
1993	12235.3725
1994	12857.445
1995	13413.1
1996	13630.57
1997	13729.895
1998	14117.9675
1999	15111.8125
2000	15180.745
2001	15271.555
2002	15690.0875
2003	15885.79
2004	15728.64
2005	16678.6475
2006	16563.285
2007	16850.4725
2008	17192.4
2009	17564.3325
2010	17662.3725
2011	17639.455
2012	17756.67
2013	17694.2025
2014	17605.4125
2015	17689.6875
2016	17773.51
2017	17916.5075
2018	17943.53
2019	17912.955
2020	18037.61