Year	per Person
1980	10.73053
1981	9.95408
1982	9.29954
1983	8.69953
1984	8.11449
1985	7.58824
1986	7.2897
1987	7.14848
1988	7.01482
1989	3.91369
1990	4.07087
1991	4.36575
1992	4.06659
1993	3.69227
1994	3.50239
1995	3.44882
1996	3.22723
1997	3.27506
1998	3.38156
1999	3.39999
2000	3.30135
2001	3.24298
2002	2.95993
2003	2.92535
2004	2.62291
2005	2.52088
2006	2.59342
2007	2.33512
2008	2.16447
2009	2.45228
2010	2.37903
2011	2.07691
2012	2.05041
2013	1.99838
2014	1.93776
2015	1.90338
2016	1.72744