Year	metric tons per capita
1990	1.6349292997266236
1991	1.7634733322958638
1992	1.7356198152873359
1993	1.5818184075136095
1994	1.4698495956290474
1995	1.4083629486191658
1996	1.329555613346763
1997	1.2168290839233715
1998	1.2186228283071092
1999	1.3500757140342974
2000	1.14738248854468
2001	1.1372197984078216
2002	1.0257626342509631
2003	0.8366548447029883
2004	0.7953617834102643
2005	0.8553056245798994
2006	0.7941128049250272
2007	0.783442169064094
2008	0.6144531302600638
2009	0.5972250372836817
2010	0.7412904794018522
2011	0.8719320946875755
2012	0.9012138483389521
2013	0.9012482237734833
2014	0.8668384893985914
2015	0.8469624414435756
2016	0.7230619266816785
2017	0.6630691498892184
2018	0.7354348046768495
2019	0.6633383281422749
2020	0.530483547000938