Year	thousand metric tons of CO2 equivalent
1990	56.5325
1991	56.48
1992	56.89
1993	52.83
1994	52.9225
1995	53.0425
1996	53.2
1997	48.8975
1998	47.305
1999	44.2225
2000	40.935
2001	37.8325
2002	34.8875
2003	32.4175
2004	30.09
2005	27.235
2006	23.67
2007	21.615
2008	22.85
2009	24.5375
2010	25.0925
2011	24.5575
2012	24.9775
2013	25.325
2014	25.11
2015	24.9675
2016	25.1525
2017	26.4175
2018	26.4475
2019	26.73
2020	26.4525