Year	metric tons per capita
1990	3.158688489903888
1991	2.2319708979501076
1992	2.4375264824589657
1993	2.120097672779717
1994	2.05540587907208
1995	2.169871181209458
1996	2.5417129523095636
1997	2.7395277234545214
1998	2.892363822322278
1999	1.9997625548472693
2000	2.5139985007025376
2001	2.7449759873820567
2002	2.896307608046859
2003	3.085571079284038
2004	3.3280634267705547
2005	3.26375921635917
2006	3.543433193772611
2007	3.407184899533185
2008	4.365373300765517
2009	2.8263253403720556
2010	4.171913442724578
2011	4.08964019100792
2012	3.7570032919702028
2013	3.6498300888431716
2014	3.567649281934996
2015	3.791795987842336
2016	3.456033475654143
2017	3.642510198867882
2018	4.018308430845978
2019	4.181644556193612
2020	4.06756091201437