Year	metric tons per capita
1990	2.7995022842417683
1991	2.74943224457465
1992	2.911978999818316
1993	3.052820550280511
1994	3.1499259960670716
1995	3.1671996209869793
1996	3.202337188023761
1997	3.2807846928977784
1998	3.2240474198252778
1999	3.1944475879351373
2000	3.253567467287015
2001	3.357638217187053
2002	3.3965851122921857
2003	3.4248293621416277
2004	3.5323190946864567
2005	3.6877242790880085
2006	3.78771089433464
2007	3.8404187504134466
2008	4.041063006113401
2009	4.06896311884473
2010	4.20845277164622
2011	4.209483864374069
2012	4.401208530104973
2013	4.386230743996076
2014	4.439510778111383
2015	4.450524608613301
2016	4.402999306443541
2017	4.350683678047684
2018	4.222333042117846
2019	4.181158003031338
2020	3.9290777444704865