Year	thousand metric tons of CO2 equivalent
1990	168.85
1991	166.1125
1992	165.975
1993	167.8375
1994	170.7
1995	171.0375
1996	170.675
1997	174.1125
1998	209.05
1999	217.025
2000	224.3
2001	225.516356
2002	236.132711
2003	233.749067
2004	236.765423
2005	246.581778
2006	261.582112
2007	277.982447
2008	284.382781
2009	292.783115
2010	307.183449
2011	316.376967
2012	324.170484
2013	323.764002
2014	329.357519
2015	343.951037
2016	350.200373
2017	350.349709
2018	357.899045
2019	359.948381
2020	355.897718