Year	thousand metric tons of CO2 equivalent
1990	88.1
1991	88.9
1992	90.9
1993	96.9
1994	98.4
1995	100.2
1996	104.3
1997	109.4
1998	112.6
1999	118
2000	123.4
2001	127
2002	130
2003	132.6
2004	135.1
2005	138.8
2006	140.2
2007	146.2
2008	144
2009	163.1
2010	168.9
2011	162.1
2012	162.1
2013	161.3
2014	171.1
2015	179
2016	176.8
2017	186.8
2018	188.5
2019	186
2020	180