Year	Per 100 People
1960	26.37411
1965	29.1714
1970	32.94032
1975	36.73041
1976	37.42646
1977	38.25204
1978	39.22428
1979	40.09888
1980	41.03445
1981	45.51164
1982	45.92235
1983	46.80156
1984	47.17648
1985	48.16204
1986	48.65884
1987	50.03578
1988	51.29853
1989	52.57802
1990	53.90022
1991	54.67712
1992	55.67652
1993	56.95949
1994	58.40262
1995	60.09926
1996	61.92109
1997	63.88962
1998	65.27121
1999	67.95541
2000	68.27119
2001	67.25266
2002	65.82457
2003	63.07443
2004	60.74079
2005	59.35054
2006	56.22717
2007	52.70149
2008	53.65093
2009	49.94603
2010	48.48734
2011	46.07567
2012	44.23215
2013	42.22425
2014	40.443
2015	39.02364
2016	37.7212
2017	36.95439