Year	thousand metric tons of CO2 equivalent
1990	4555.5856
1991	4503.5548
1992	4516.041
1993	4511.8988
1994	4550.9964
1995	4550.609
1996	4768
1997	4946.1146
1998	5493.5704
1999	5455.5754
2000	6157.0674
2001	5732.8346
2002	5651.3018
2003	6312.2658
2004	5551.74
2005	6301.6868
2006	5744.1586
2007	5607.913
2008	5411.382
2009	5232.1052
2010	5485.9714
2011	5396.2436
2012	5299.483
2013	5453.1318
2014	5332.7696
2015	5406.8226
2016	5604.7542
2017	5518.5726
2018	5524.1154
2019	5491.991
2020	5686.5552