Year	Per 100 People
1965	0.19458
1970	0.22134
1975	0.28211
1976	0.29828
1977	0.30807
1978	0.317
1979	0.33837
1980	0.35574
1981	0.36776
1982	0.35482
1983	0.34163
1984	0.34517
1985	0.34149
1986	0.39134
1987	0.50987
1988	0.61384
1989	0.64689
1990	0.67277
1991	1.05635
1992	1.42898
1993	1.61391
1994	1.76558
1995	1.80094
1996	1.94391
1997	2.20118
1998	2.20588
1999	2.44399
2000	2.70326
2001	2.75711
2002	2.92447
2003	3.10044
2004	3.07406
2005	3.04666
2006	3.10539
2007	3.16415
2008	3.07622
2009	2.95512
2010	2.88255
2011	2.88886
2012	3.56224
2013	3.45265
2014	2.91164
2015	2.2755
2016	1.86259