Year	Per 100 People
1960	4.78293
1965	6.2612
1970	8.39433
1975	13.39163
1976	15.84365
1977	18.79804
1978	22.36647
1979	25.91121
1980	29.40218
1981	32.67705
1982	35.7082
1983	38.2029
1984	40.08201
1985	41.5733
1986	42.9249
1987	44.27278
1988	45.83514
1989	47.54841
1990	49.30567
1991	50.84062
1992	52.35058
1993	53.51129
1994	54.66397
1995	55.63016
1996	56.23962
1997	57.34863
1998	57.76047
1999	57.13119
2000	57.0175
2001	56.89071
2002	56.66107
2003	56.00817
2004	55.35372
2005	55.04631
2006	55.40413
2007	56.16441
2008	56.31356
2009	65.29848
2010	64.45201
2011	63.7318
2012	62.39799
2013	61.139
2014	60.45274
2015	60.39511
2016	60.26821
2017	59.53719