Year	Per 100 People
1960	1.07598
1965	4.58806
1970	6.22856
1975	8.43446
1976	8.77228
1977	9.11315
1978	9.41414
1979	9.67247
1980	10.09164
1981	10.70661
1982	11.57905
1983	12.54121
1984	13.27768
1985	14.02441
1986	15.13138
1987	16.61084
1988	18.57294
1989	22.00315
1990	23.90422
1991	27.0111
1992	30.11289
1993	32.42487
1994	34.38828
1995	35.89149
1996	37.49747
1997	39.11388
1998	40.07774
1999	41.01627
2000	41.72816
2001	42.17062
2002	41.65709
2003	40.82266
2004	40.2561
2005	40.07015
2006	40.01697
2007	39.54612
2008	39.05483
2009	40.6008
2010	42.11487
2011	42.75219
2012	43.07458
2013	43.02749
2014	43.82093
2015	44.94898
2016	46.16129
2017	46.76915