Year	Per 100 People
1960	0.41838
1965	0.73787
1970	8.04427
1975	0.8983
1976	0.91302
1977	0.94524
1978	0.9604
1979	0.98999
1980	1.01819
1981	1.0602
1982	1.07592
1983	1.09054
1984	1.10284
1985	1.12158
1986	1.15093
1987	1.15335
1988	1.15731
1989	1.18482
1990	1.21897
1991	1.26701
1992	1.38395
1993	1.34814
1994	1.32141
1995	1.35673
1996	2.06485
1997	2.8063
1998	3.72693
1999	4.50613
2000	4.89073
2001	6.32512
2002	7.05348
2003	8.19671
2004	8.86312
2005	9.05998
2006	8.38154
2007	9.92094
2008	11.485
2009	12.25261
2010	11.32675
2011	11.57784
2012	10.68479
2013	9.63351
2014	8.07094
2015	7.75541
2016	8.4966
2017	8.42984