Year	thousand metric tons of CO2 equivalent
1990	475.536152
1991	587.46275
1992	571.554915
1993	571.280939
1994	586.358839
1995	550.398692
1996	614.848887
1997	612.247027
1998	557.283973
1999	643.101584
2000	562.855507
2001	584.099597
2002	571.790646
2003	620.525309
2004	620.389556
2005	581.353498
2006	622.529699
2007	625.883871
2008	587.702287
2009	552.53856
2010	588.688424
2011	564.031534
2012	542.415504
2013	556.513942
2014	544.391929
2015	551.527597
2016	575.426155
2017	580.426155
2018	576.326155
2019	559.926155
2020	540.426155