Year	Per 100 People
1960	1.91593
1965	3.63191
1970	5.80133
1975	8.05975
1976	8.4338
1977	8.79867
1978	9.15237
1979	9.35428
1980	9.40543
1981	9.51988
1982	9.64924
1983	9.86452
1984	10.16902
1985	10.43819
1986	10.85005
1987	11.37609
1988	11.9982
1989	12.70059
1990	13.44149
1991	14.29583
1992	15.40396
1993	16.69591
1994	18.71804
1995	20.80722
1996	23.14801
1997	25.81731
1998	28.53032
1999	30.6682
2000	31.44871
2001	28.81949
2002	25.97565
2003	23.97593
2004	23.15832
2005	22.17174
2006	21.62418
2007	24.26728
2008	23.86915
2009	22.58301
2010	20.33237
2011	19.52042
2012	17.99427
2013	17.82641
2014	16.90942
2015	15.9327
2016	15.12787
2017	13.92968