Year	Per 100 People
1975	4.41008
1976	4.82984
1977	5.68674
1978	6.16489
1979	6.70845
1980	7.026
1981	7.93512
1982	8.45213
1983	9.00339
1984	9.58784
1985	10.21185
1986	10.87413
1987	11.57519
1988	12.32576
1989	13.13904
1990	14.02781
1991	15.06154
1992	15.40514
1993	15.81549
1994	16.23675
1995	16.87173
1996	17.50106
1997	19.11806
1998	19.84381
1999	21.06524
2000	21.90626
2001	22.82223
2002	24.4499
2003	24.96806
2004	26.72783
2005	27.92126
2006	30.63013
2007	31.58796
2008	31.82714
2009	31.71341
2010	31.37591
2011	30.81825
2012	29.40191
2013	28.18519
2014	26.58056
2015	24.70903
2016	22.41984
2017	21.66186