Year	Per 100 People
1960	0.5887
1965	0.82926
1970	0.96261
1975	1.38953
1976	1.55795
1977	1.77916
1978	2.06514
1979	2.41567
1980	2.86735
1981	3.45745
1982	4.04537
1983	4.72444
1984	5.58945
1985	6.14528
1986	6.49937
1987	6.84848
1988	7.32744
1989	7.9162
1990	8.79097
1991	9.80525
1992	11.00094
1993	12.36586
1994	14.32816
1995	16.25933
1996	17.93872
1997	19.58256
1998	19.8257
1999	19.5566
2000	19.96066
2001	19.87249
2002	19.29807
2003	18.51681
2004	17.66206
2005	17.01384
2006	16.60868
2007	16.33751
2008	16.65003
2009	16.38811
2010	16.39781
2011	15.79494
2012	15.73133
2013	15.2686
2014	14.58978
2015	14.61276
2016	15.51018
2017	20.80112