Year	thousand metric tons of CO2 equivalent
1990	196.640799
1991	198.208056
1992	198.613113
1993	202.981569
1994	209.734026
1995	224.592083
1996	234.528518
1997	237.074554
1998	241.468189
1999	250.868224
2000	251.11966
2001	251.837329
2002	252.167598
2003	252.527666
2004	254.526735
2005	255.125204
2006	252.801171
2007	253.665738
2008	254.113105
2009	254.858472
2010	255.276039
2011	255.262073
2012	257.155306
2013	257.29034
2014	258.408773
2015	259.348407
2016	260.590779
2017	258.46575
2018	258.575722
2019	258.864494
2020	259.183065