Year	thousand metric tons of CO2 equivalent
1990	108.9
1991	109.9
1992	116.4
1993	119.1
1994	122.25
1995	116.65
1996	127.15
1997	129.15
1998	132.75
1999	133.05
2000	75.75
2001	77.25
2002	77.45
2003	77.25
2004	77.75
2005	78.25
2006	81.25
2007	81.35
2008	81.45
2009	83.35
2010	86.05
2011	87.05
2012	87.85
2013	88.65
2014	90.55
2015	91.95
2016	93.95
2017	94.25
2018	93.55
2019	96.95
2020	85.45