Year	metric tons per capita
1990	3.2987516903362284
1991	3.4551924291310803
1992	3.4318348237983
1993	3.4699698657034213
1994	3.697072179285232
1995	3.410509722109159
1996	3.5234331065296645
1997	3.675327629709312
1998	3.8530427863691865
1999	3.6869154566246616
2000	3.874145960862396
2001	3.811392059068827
2002	3.8249679457137686
2003	3.950940190076982
2004	3.9838256881015495
2005	4.098800784147539
2006	4.1941833972186835
2007	4.220761326653517
2008	4.189727318691341
2009	4.037593962212934
2010	4.113210914250376
2011	4.1909897865432555
2012	4.202413545903735
2013	4.056055226755174
2014	3.8923552480391983
2015	3.925368325534228
2016	3.920323024453884
2017	3.862759411978864
2018	3.5874893049253584
2019	3.6121651406374964
2020	3.040766374772257