Year	metric tons per capita
1990	2.2713856142626443
1991	2.267471923422308
1992	2.229005314335734
1993	2.205904041857974
1994	2.152960268469382
1995	2.2174256425087884
1996	2.2017776956680235
1997	2.1995863028444504
1998	2.195681035297264
1999	2.1698324257773067
2000	2.2280568164784937
2001	2.265640508181936
2002	2.318910329288741
2003	2.479003295547191
2004	2.649840224643555
2005	2.8051529400188917
2006	2.960251941443857
2007	3.10780290728272
2008	3.163473788710794
2009	3.2091880002330355
2010	3.4110543934531985
2011	3.6022019648764125
2012	3.6645257657639667
2013	3.7274466564001716
2014	3.7361374467299853
2015	3.659986725858175
2016	3.641784127076074
2017	3.6973142854161583
2018	3.8049582644670044
2019	3.8178195430908097
2020	3.69930515802139