Year	metric tons per capita
1990	2.42226075468582
1991	2.28990711107642
1992	2.42099471830986
1993	2.77688283078618
1994	2.85610436814435
1995	2.93975086334484
1996	2.81643625192012
1997	3.13115500654637
1998	3.21807810443177
1999	3.46215578284815
2000	3.4553164054751
2001	3.39961989523942
2002	4.26175103305785
2003	4.10523369717324
2004	3.84554307116105
2005	4.29421575585522
2006	4.86587730938042
2007	5.43080467335856
2008	5.7587013652971
2009	5.62669881630864
2010	5.83845682792407
2011	5.71303592294095
2012	5.81277520108026
2013	5.70147706659756
2014	5.80598829483446