Year	Per 100 People
1977	4.11963
1978	4.52396
1979	5.06245
1980	5.72315
1981	7.00002
1982	7.27703
1983	8.01373
1984	8.70653
1985	9.2681
1986	9.65485
1987	10.35763
1988	11.27801
1989	12.01404
1990	13.52474
1991	14.68112
1992	17.55967
1993	19.60171
1994	21.28314
1995	22.92356
1996	25.85962
1997	24.60886
1998	24.35358
1999	24.23802
2000	24.15669
2001	26.00282
2002	23.43261
2003	23.18267
2004	23.11396
2005	22.97362
2006	21.65456
2007	21.2221
2008	21.3014
2009	20.98876
2010	20.55797
2011	20.26304
2012	17.74443
2014	17.40182
2015	18.20224
2016	17.53632