Year	metric tons per capita
1990	2.466365604238
1991	2.541851284758248
1992	2.499022087494672
1993	2.6401344109105667
1994	2.6347204134902644
1995	2.684182209003139
1996	2.6263502240532
1997	2.525211077434408
1998	2.4945673582744514
1999	2.5540462668608668
2000	2.601065338871273
2001	2.520609525628758
2002	2.605694612843077
2003	2.751098760873316
2004	2.752758781509278
2005	2.857926569688886
2006	2.985149130793167
2007	3.0235029150778105
2008	3.1167709471375886
2009	3.1870690441653986
2010	3.1843569996985748
2011	3.3052325170130614
2012	3.6213677179273973
2013	3.658468678910711
2014	3.8115211471735626
2015	3.9519609386747447
2016	3.8338342216847483
2017	3.833681126266653
2018	3.9242987223008785
2019	3.9944018278919873
2020	3.718223370307596