Year	thousand metric tons of CO2 equivalent
1990	65.984328
1991	66.686692
1992	67.389056
1993	68.09142
1994	68.793784
1995	69.496148
1996	71.82686
1997	74.157572
1998	76.488284
1999	78.818996
2000	81.149708
2001	76.278404
2002	71.4071
2003	66.535797
2004	61.664493
2005	56.793189
2006	54.62569
2007	52.458192
2008	50.290693
2009	48.123194
2010	45.955695
2011	45.955695
2012	45.955695
2013	45.955695
2014	45.955695
2015	45.955695
2016	46.296108
2017	46.63652
2018	46.976933
2019	47.317345
2020	47.657758