Year	thousand metric tons of CO2 equivalent
1990	0.253974
1991	0.257277
1992	167.2
1993	167.7
1994	167.6
1995	173.1
1996	177.5
1997	182.8
1998	116.1
1999	119.5
2000	122.9
2001	128.1
2002	132.3
2003	135.7
2004	96.5
2005	100.5
2006	103.5
2007	106.3
2008	108.8
2009	112.4
2010	115.2
2011	122.6
2012	122.7
2013	124.4
2014	128
2015	129.9
2016	134.3
2017	142.7
2018	144.3
2019	146.3
2020	148.3