Year	thousand metric tons of CO2 equivalent
1990	223.012757
1991	223.74344
1992	219.22483
1993	218.723316
1994	218.374581
1995	220.785835
1996	224.259901
1997	220.222877
1998	220.199628
1999	225.26459
2000	137.6164
2001	136.9012
2002	214.1726
2003	210.1794
2004	230.5924
2005	216.3778
2006	213.368
2007	212.5336
2008	217.0632
2009	217.689
2010	220.6392
2011	221.1458
2012	214.262
2013	216.8546
2014	214.6196
2015	219.3876
2016	223.3808
2017	224.6026
2018	216.6758
2019	221.2054
2020	215.2156