Year	per Person
1966	0.16623
1967	0.47302
1968	0.659
1969	0.74887
1970	0.82029
1971	0.79436
1972	0.75215
1973	0.71744
1974	0.7489
1975	0.81539
1976	0.64167
1977	0.72764
1978	0.81653
1979	0.89215
1980	0.88361
1981	0.82612
1982	0.76419
1983	0.79822
1984	0.76881
1985	0.73861
1986	0.69909
1987	0.65091
1988	0.62708
1989	0.61608
1990	0.57385
1991	0.64677
1992	0.63396
1993	0.57089
1994	0.51728
1995	0.49547
1996	0.48391
1997	0.44991
1998	0.43649
1999	0.44385
2000	0.40527
2001	0.36927
2002	0.38213
2003	0.34659
2004	0.35611
2005	0.36823
2006	0.35147
2007	0.48191
2008	0.43779
2009	0.41117
2010	0.37337
2011	0.33965
2012	0.35738
2013	0.3266
2014	0.30089
2015	0.26689
2016	0.25465