Year metric tons per capita 1990 10.235226206488846 1991 9.850626452618492 1992 9.236265993872355 1993 8.48017689518649 1994 7.617862732102402 1995 7.409660521651469 1996 7.2305124797006295 1997 6.862015585121967 1998 6.765715987676437 1999 6.700292390958913 2000 6.835877512469411 2001 6.8277953699454015 2002 6.895376450198106 2003 7.180083105702464 2004 7.1756986586631095 2005 7.202299944131364 2006 7.48931851393069 2007 7.609604483507393 2008 7.6620976778777345 2009 7.0557871180562834 2010 7.363276613027699 2011 7.686519054595904 2012 7.541939499103668 2013 7.347674482199214 2014 7.071413571139055 2015 6.889532989737493 2016 6.944740558836713 2017 7.082646627494829 2018 7.226209220705094 2019 7.174421507596471 2020 6.909365309210925