Year	thousand metric tons of CO2 equivalent
1990	610338.1149999999
1991	616770.6799999998
1992	624749.1224999999
1993	625045.295
1994	636379.695
1995	665210.62
1996	688906.4375000001
1997	651210.1450000001
1998	663463.8500000001
1999	684372.9274999999
2000	682022.735
2001	670230.8275
2002	660398.3275
2003	655590.86
2004	670523.3
2005	678397.2374999999
2006	684342.6950000002
2007	682433.0574999999
2008	690612.3625
2009	694315.0475000001
2010	693420.2274999998
2011	688746.265
2012	689455.8675
2013	684450.2999999999
2014	683941.1450000001
2015	686760.09
2016	689202.6524999999
2017	692139.175
2018	693239.3949999999
2019	676333.4249999999
2020	683671.9350000002