Year	metric tons per capita
1990	13.270385844282483
1991	12.537033297756754
1992	11.018949039700557
1993	9.569232567766466
1994	8.005752926538962
1995	7.75050278765666
1996	6.778813423218391
1997	6.487743751309428
1998	6.167934668807147
1999	6.154630188831178
2000	6.047132268461561
2001	6.1762860031564415
2002	6.305502601837623
2003	6.906675009734287
2004	6.472604331830483
2005	6.271184112674169
2006	6.497195657003305
2007	6.711370217884123
2008	6.5111779451633955
2009	5.463591764947469
2010	5.862660906219064
2011	6.1992269475885555
2012	6.077865491851859
2013	5.941323177528215
2014	5.251101919049359
2015	4.230219395204721
2016	4.477426691400614
2017	3.8978463777282903
2018	4.153532654663899
2019	3.925841839478756
2020	3.7473878451278027