Year	thousand metric tons of CO2 equivalent
1990	305
1991	314.4
1992	327.7
1993	351.9
1994	440.6
1995	453
1996	465.6
1997	473.4
1998	500.1
1999	522
2000	556
2001	576
2002	607
2003	633.2
2004	641.3
2005	674.5
2006	695
2007	696.2
2008	709.6
2009	728.5
2010	752.1
2011	784
2012	781.9
2013	823.6
2014	802.9
2015	821.7
2016	835
2017	853.3
2018	864.6
2019	937.5
2020	945.5