Year	thousand metric tons of CO2 equivalent
1990	180.2
1991	181.5
1992	192.7
1993	197.7
1994	204.2
1995	212.5
1996	221
1997	227.4
1998	245.1
1999	256.1
2000	217.1
2001	208.1
2002	210.5
2003	196
2004	197
2005	189.6
2006	187.1
2007	187.7
2008	191.4
2009	210.3
2010	212.5
2011	226.2
2012	257.5
2013	271.4
2014	267.5
2015	279
2016	269.4
2017	266.3
2018	286.6
2019	299.5
2020	310.8