Year	Per 100 People
1975	2.3759
1976	2.69821
1977	3.00271
1978	3.2908
1979	3.56402
1980	3.82368
1981	4.07086
1982	4.30597
1983	4.52853
1984	4.73751
1985	4.93216
1986	5.11362
1987	5.28275
1988	5.55254
1989	5.85632
1990	5.97182
1991	6.26309
1992	6.37946
1993	6.61042
1994	7.40201
1995	7.61198
1996	7.88833
1997	8.12838
1998	8.0217
1999	8.03604
2000	8.06885
2001	8.49284
2002	8.11279
2003	8.0782
2004	8.24936
2005	8.37287
2006	8.81083
2007	9.40795
2008	9.67774
2009	9.87055
2010	10.22175
2011	10.57197
2012	10.91529
2013	11.21821
2014	11.42284
2015	11.64361
2016	11.74384