Year	Per 100 People
1965	2.4331
1970	3.71039
1975	4.03365
1976	4.11443
1977	4.16769
1978	4.17468
1979	4.09595
1980	3.97804
1981	4.09521
1982	4.17442
1983	5.82457
1984	7.15872
1985	10.08388
1986	11.97744
1987	13.28997
1988	13.37131
1989	13.036
1990	13.49791
1991	14.14457
1992	14.55433
1993	15.46825
1994	16.30121
1995	16.67807
1996	17.44734
1997	19.30628
1998	20.91574
1999	22.04946
2000	24.98194
2001	24.50856
2002	24.90059
2003	24.83381
2004	24.97708
2005	24.85092
2006	24.97805
2007	23.47135
2008	23.93179
2009	22.94362
2010	22.08531
2011	21.87883
2012	21.36312
2013	21.60515
2014	21.33064
2015	19.91571
2016	19.94099
2017	18.80362