Year	Per 100 People
1975	2.34112
1976	2.68447
1977	2.92884
1978	3.30723
1979	3.6697
1980	4.05045
1981	4.31887
1982	4.55591
1983	4.72799
1984	5.03596
1985	5.35801
1986	5.79861
1987	6.24274
1988	6.38535
1989	6.6772
1990	7.1818
1991	7.50687
1992	7.60406
1993	8.19387
1994	7.49975
1995	7.81851
1996	7.38807
1997	7.45701
1998	7.69683
1999	7.62448
2000	7.64303
2001	7.82297
2002	7.91013
2003	7.90397
2004	8.2659
2005	8.67685
2006	8.95066
2007	9.28769
2008	9.3971
2009	9.33062
2010	9.01921
2011	9.11669
2012	8.73871
2013	8.11563
2014	7.67476
2015	6.95668
2016	6.41649
2017	5.99307