Year	thousand metric tons of CO2 equivalent
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0
2004	0
2005	22.4
2006	22.8
2007	24.3
2008	26.4
2009	24.1
2010	28.7
2011	27.7
2012	26.5
2013	24.4
2014	23.4
2015	25.2
2016	25.2
2017	26.2
2018	27.1
2019	28.1
2020	26.1