Year	thousand metric tons of CO2 equivalent
1990	2904.643813
1991	2941.49054
1992	2640.491194
1993	2402.505391
1994	2267.687588
1995	2251.906785
1996	2166.522388
1997	2276.617592
1998	2312.519995
1999	2360.315998
2000	2392.600802
2001	2575.637693
2002	2699.201985
2003	2787.891076
2004	2928.442368
2005	2997.489459
2006	3139.446606
2007	3149.045153
2008	3353.4323
2009	3388.163446
2010	3359.672393
2011	3462.247619
2012	3565.959645
2013	3615.978871
2014	3707.450097
2015	4097.544323
2016	4048.188968
2017	3962.261613
2018	4263.951057
2019	4478.074702
2020	4793.554747