Year	per Person
1965	18.73952
1966	17.57126
1967	17.8504
1968	17.62177
1969	16.98279
1970	17.02141
1971	15.90577
1972	14.14649
1973	14.35708
1974	12.36337
1975	9.51277
1976	9.08426
1977	8.59937
1978	8.05318
1979	8.53015
1980	7.64798
1981	7.20857
1982	6.33885
1983	5.85346
1984	5.72196
1985	5.22639
1986	5.50657
1987	5.4372
1988	5.56245
1989	5.44967
1990	5.93094
1991	6.45925
1992	6.32672
1993	6.40254
1994	6.64999
1995	7.00042
1996	7.29268
1997	7.42184
1998	7.54239
1999	6.61959
2000	6.54556
2001	6.53467
2002	6.00975
2003	5.70114
2004	6.46327
2005	6.32501
2006	6.2836
2007	5.97791
2008	5.88344
2009	5.45801
2010	5.02411
2011	4.80293
2012	4.66061
2013	4.54452
2014	4.50609
2015	4.36365
2016	3.92991