Year	per Person
1970	0.226
1971	0.23201
1972	0.22411
1973	0.22796
1974	0.22148
1975	0.24741
1976	0.25094
1977	0.25004
1978	0.23344
1979	0.2705
1980	0.30414
1981	0.29938
1982	0.31981
1983	0.36052
1984	0.38502
1985	0.3933
1986	0.45373
1987	0.45597
1988	0.53118
1989	0.55716
1990	0.51989
1991	0.5495
1992	0.56131
1993	0.55542
1994	0.56592
1995	0.61658
1996	0.67296
1997	0.69691
1998	0.74373
1999	0.83931
2000	0.92618
2001	0.91339
2002	0.88975
2003	0.982
2004	1.04295
2005	1.04909
2006	1.04882
2007	1.00943
2008	0.98196
2009	0.91381
2010	0.87544
2011	0.83794
2012	0.80662
2013	0.75176
2014	0.74234
2015	0.75642
2016	0.78552