Year	Per 100 People
1960	0.68252
1965	0.83942
1970	1.44106
1975	3.55075
1976	4.05012
1977	4.51038
1978	4.87466
1979	5.24609
1980	5.63836
1981	5.92795
1982	6.25694
1983	6.52156
1984	6.85762
1985	7.347
1986	7.80924
1987	8.42788
1988	9.14155
1989	9.8195
1990	10.58822
1991	11.33831
1992	11.6791
1993	11.99009
1994	12.5243
1995	13.05493
1996	13.75132
1997	14.63585
1998	15.45761
1999	13.14524
2000	13.89666
2001	15.27092
2002	17.22174
2003	18.96448
2004	20.72262
2005	22.35371
2006	24.56305
2007	26.15563
2008	27.10885
2009	27.80073
2010	28.42829
2011	28.93909
2012	29.59882
2013	29.99717
2014	29.93347
2015	29.57383
2016	28.85222
2017	28.23481