Year	thousand metric tons of CO2 equivalent
1990	1020.6
1991	1101.1
1992	1171.4
1993	1262
1994	1415.6
1995	1401
1996	1481
1997	1517.5
1998	1565.7
1999	1693.8
2000	1807.9
2001	1917.7
2002	2030.1
2003	2142.3
2004	2279.2
2005	2500.1
2006	2677.2
2007	2653.3
2008	2707.1
2009	2861.8
2010	2667.7
2011	2671.8
2012	2785.8
2013	2925.3
2014	3122
2015	3067
2016	2893.9
2017	2994.8
2018	3087.7
2019	3054
2020	2868.6