Year	Per 100 People
1975	0.18372
1976	0.18794
1977	0.19256
1978	0.19927
1979	0.20747
1980	0.21539
1981	0.22033
1982	0.22915
1983	0.24182
1984	0.26339
1985	0.29135
1986	0.32137
1987	0.35156
1988	0.41726
1989	0.49242
1990	0.58427
1991	0.71062
1992	0.95258
1993	1.42401
1994	2.22095
1995	3.28288
1996	4.39583
1997	5.58429
1998	6.89743
1999	8.52401
2000	11.28656
2001	13.97186
2002	16.49579
2003	20.11316
2004	23.72559
2005	26.51625
2006	27.66954
2007	27.35165
2008	25.31651
2009	23.20386
2010	21.64971
2011	20.84966
2012	20.22639
2013	19.30766
2014	17.94318
2015	16.53481
2016	14.72205
2017	13.74669