Year	thousand metric tons of CO2 equivalent
1990	4838.1492
1991	4960.657
1992	5062.6326
1993	5181.773
1994	5333.5444
1995	5462.787
1996	5249.1508
1997	5448.483
1998	5790.1102
1999	6118.9532
2000	5811.298
2001	5782.5112
2002	6647.7542
2003	6341.0824
2004	7192.0214
2005	7735.5138
2006	7385.1552
2007	7358.514
2008	7359.9444
2009	7337.8626
2010	9187.1612
2011	8110.5766
2012	8118.9504
2013	8090.5212
2014	7654.9346
2015	8168.1502
2016	8654.516
2017	8486.8612
2018	8390.5774
2019	9221.3716
2020	9399.9928