Year	thousand metric tons of CO2 equivalent
1990	7480.878511
1991	7360.310622
1992	6889.54987
1993	6926.36931
1994	6828.265034
1995	6825.002114
1996	6776.920823
1997	6769.019094
1998	6587.461187
1999	6628.087033
2000	6621.943089
2001	6446.918542
2002	6280.494524
2003	6429.259616
2004	5726.663558
2005	5617.421308
2006	5560.094164
2007	5531.323608
2008	5545.699483
2009	5250.465635
2010	5166.585449
2011	5152.062222
2012	5187.044483
2013	5096.906199
2014	5277.30677
2015	5439.711329
2016	5501.500505
2017	5533.16701
2018	5261.279716
2019	5419.384022
2020	5492.825727