Year	thousand metric tons of CO2 equivalent
1990	175.869712
1991	160.563996
1992	129.322109
1993	126.18989
1994	127.236295
1995	146.298333
1996	149.044146
1997	159.117009
1998	148.36957
1999	139.502619
2000	125.30155
2001	140.92872
2002	136.032226
2003	124.640766
2004	162.648529
2005	172.790716
2006	182.416468
2007	180.192585
2008	170.671702
2009	162.114819
2010	164.689536
2011	156.022386
2012	164.290235
2013	156.847484
2014	156.792534
2015	163.381783
2016	160.401783
2017	162.951383
2018	155.715983
2019	150.368583
2020	150.663183