Year	metric tons per capita
1990	1.4758699106981286
1991	1.4729448856800387
1992	1.5434173869653742
1993	1.52277556764772
1994	1.6570917049624008
1995	1.809243515844536
1996	2.037982981380986
1997	2.081576344291606
1998	2.00577998151265
1999	1.7414050834165458
2000	1.746444998604919
2001	1.887934323566946
2002	1.8493629485818142
2003	1.8536545318070934
2004	1.934132781089169
2005	2.049402716569891
2006	2.150486745685525
2007	2.149610909753025
2008	2.185862159758462
2009	2.340029001342082
2010	2.4853256444391225
2011	2.4345230470054324
2012	2.3950775138251816
2013	2.5250351571192984
2014	2.6194520439097793
2015	2.5556032630970478
2016	2.4204808089741925
2017	2.3087638073170758
2018	2.3668298260568252
2019	2.2850550112028896
2020	1.9575753492533086