Year	Per 100 People
1975	16.97793
1976	20.97902
1977	20.74115
1978	21.89082
1979	21.63039
1981	15.80611
1982	15.55008
1983	15.27884
1984	14.99063
1985	14.68249
1986	14.3661
1987	14.02852
1988	13.47801
1989	13.40183
1990	13.10759
1991	12.83697
1992	12.57071
1993	14.40477
1994	15.21761
1995	15.5482
1996	15.95373
1997	16.40648
1998	16.92216
1999	17.43028
2000	17.93365
2001	18.4043
2002	17.85714
2003	17.8112
2004	17.77602
2005	17.79711
2006	17.8731
2007	17.9964
2008	18.09591
2009	19.10508
2010	0
2011	0
2012	0
2013	0
2014	0