Year	per Person
1971	0.07497
1972	0.41048
1973	0.39424
1974	0.4285
1975	2.30103
1976	3.38972
1977	3.46287
1978	4.27968
1979	4.78778
1980	6.13058
1981	5.92636
1982	6.1367
1983	7.6124
1984	8.68842
1985	9.44137
1986	10.32158
1987	11.96928
1988	13.54742
1989	17.72523
1990	19.34012
1991	21.97977
1992	24.90284
1993	26.43864
1994	29.61571
1995	31.69227
1996	35.20433
1997	35.34406
1998	33.63698
1999	33.45326
2000	35.7228
2001	35.92412
2002	34.73809
2003	33.66443
2004	32.68008
2005	29.94799
2006	27.61568
2007	25.12899
2008	24.0495
2009	22.51625
2010	20.23157
2011	18.95406
2012	17.41139
2013	16.38573
2014	16.5988
2015	16.92784
2016	17.20766