Year	per Person
1970	0.16923
1971	0.28035
1972	0.40348
1973	0.43719
1974	0.52646
1975	0.54762
1976	0.57956
1977	0.6054
1978	0.57972
1979	0.5854
1980	0.55649
1981	0.55514
1982	0.56403
1983	0.58123
1984	0.56764
1985	0.63243
1986	0.66364
1987	0.69313
1988	0.66569
1989	0.65006
1990	0.7158
1991	0.79481
1992	0.80608
1993	0.94514
1994	1.00625
1995	1.09832
1996	1.3022
1997	1.32436
1998	1.38603
1999	1.51799
2000	1.65455
2001	1.61021
2002	1.57113
2003	1.55491
2004	1.44818
2005	1.31626
2006	1.18358
2007	1.05623
2008	1.00952
2009	0.85636
2010	0.81225
2011	0.63805
2012	0.54462
2013	0.50787
2014	0.50926
2015	0.54475
2016	0.56089