Year	metric tons per capita
1990	6.917116495741353
1991	7.073818945419638
1992	6.996061356952097
1993	7.164948020791684
1994	6.605284264459553
1995	6.610605827128521
1996	6.572434087500398
1997	6.873669845766447
1998	7.121426312519416
1999	6.946693147324851
2000	6.566341609640888
2001	6.431898669702781
2002	6.530088534710473
2003	6.745721058823529
2004	6.687779300291544
2005	6.617528017801925
2006	6.624460431654676
2007	5.71248719772404
2008	6.201402982966583
2009	5.7568233496846535
2010	5.311764154094528
2011	4.8849648511978785
2012	5.076714066566224
2013	5.2313450796065855
2014	4.347077043346992
2015	4.277172908579843
2016	3.9841063575208064
2017	4.111203700282404
2018	3.7440193551766585
2019	3.8726083883374045
2020	3.663847997729384