Year	Per 100 People
1960	0.8866
1965	1.10917
1970	1.65058
1975	2.70155
1976	2.95315
1977	3.23173
1978	3.50486
1979	3.7763
1980	3.8923
1981	4.14677
1982	4.29219
1983	4.46707
1984	4.61854
1985	4.78852
1986	4.93977
1987	5.12115
1988	5.34506
1989	5.79126
1990	6.273
1991	6.91937
1992	7.60304
1993	8.41153
1994	9.1961
1995	9.35826
1996	9.22393
1997	9.51228
1998	10.04527
1999	10.89464
2000	12.1232
2001	13.36426
2002	14.35005
2003	15.45816
2004	16.89157
2005	17.98804
2006	18.04058
2007	17.8814
2008	18.02842
2009	16.88718
2010	16.9782
2011	16.79133
2012	17.03889
2013	15.17394
2014	14.94079
2015	16.02253
2016	16.14468
2017	15.95087