Year	thousand metric tons of CO2 equivalent
1990	535.472781
1991	534.3411169999999
1992	539.437653
1993	572.337589
1994	596.0889239999999
1995	629.998371
1996	627.091471
1997	630.8001730000001
1998	619.787675
1999	598.0471789999999
2000	571.151281
2001	586.5833729999999
2002	602.3730650000001
2003	562.108955
2004	602.334647
2005	591.6917370000001
2006	581.1175699999999
2007	607.555004
2008	626.006037
2009	596.330068
2010	600.685702
2011	614.3393789999999
2012	622.3310579999999
2013	626.8361340000001
2014	455.43181300000003
2015	465.27109099999996
2016	421.64799700000003
2017	442.51210399999997
2018	435.5430140000001
2019	440.94091900000006
2020	438.769628