Year	thousand metric tons of CO2 equivalent
1990	178.511529
1991	174.411911
1992	154.412292
1993	137.112674
1994	130.113055
1995	130.113437
1996	131.413818
1997	130.4142
1998	125.114581
1999	118.716349
2000	116.022251
2001	127.745671
2002	128.805897
2003	137.107224
2004	142.409609
2005	144.909454
2006	148.331232
2007	156.526563
2008	148.909301
2009	146.606308
2010	143.606343
2011	141.711477
2012	145.710934
2013	142.514474
2014	147.5147
2015	144.506079
2016	140.205863
2017	147.705863
2018	159.705863
2019	154.905863
2020	145.005863