Year	Per 100 People
1965	0.032
1970	0.07695
1975	0.41959
1976	0.71692
1977	0.99191
1978	1.07591
1979	1.02239
1980	1.49743
1981	1.4162
1982	1.5225
1983	1.57006
1984	1.6345
1985	2.75758
1986	3.17483
1987	3.51258
1988	4.84597
1989	5.25293
1990	5.77648
1991	6.15481
1992	6.5602
1993	7.13205
1994	7.34677
1995	7.70949
1996	8.83847
1997	8.91454
1998	9.76768
1999	9.77299
2000	9.77989
2001	10.04481
2002	9.75138
2003	9.90158
2004	9.92923
2005	10.56187
2006	10.44138
2007	11.07576
2008	10.91006
2009	10.41086
2010	9.33568
2011	8.87548
2012	8.79008
2013	9.46821
2014	9.47243
2015	10.35599
2016	9.54894
2017	10.73529