Year	Per 100 People
1960	3.10117
1965	6.81855
1970	12.94909
1975	17.89161
1976	18.72412
1977	19.52453
1978	20.33113
1979	21.42303
1980	22.95264
1981	24.17677
1982	25.16823
1983	26.33589
1984	27.04096
1985	28.90183
1986	30.92352
1987	33.03939
1988	34.29742
1989	34.97855
1990	36.1395
1991	36.68715
1992	37.5141
1993	39.25834
1994	41.38347
1995	43.92091
1996	46.26606
1997	47.50029
1998	48.6886
1999	48.8478
2000	49.45341
2001	49.48177
2002	48.1786
2003	45.87749
2004	44.76855
2005	44.46931
2006	44.47904
2007	44.41343
2008	45.42502
2009	45.62532
2010	45.89306
2011	46.24263
2012	46.68075
2013	43.45933
2014	43.15399
2015	42.30864
2016	40.77506
2017	38.93496