Year	Per 100 People
1975	4.65576
1976	5.57406
1977	6.66072
1978	8.45773
1979	10.12415
1980	11.56877
1981	12.72112
1982	13.71096
1983	14.19254
1984	14.32
1985	14.88456
1986	14.98949
1987	15.87731
1988	17.88466
1989	20.08664
1990	21.31172
1991	22.20798
1992	23.55697
1993	25.06137
1994	26.41507
1995	27.45526
1996	28.70744
1997	30.92914
1998	32.24722
1999	32.63471
2000	32.33348
2001	31.65724
2002	31.18282
2003	30.35218
2004	29.05465
2005	27.00826
2006	24.98426
2007	22.92369
2008	23.1495
2009	20.61136
2010	17.8883
2011	21.04931
2012	22.10546
2013	23.16183
2014	23.18451
2015	24.67306
2016	24.65917
2017	24.68937