Year	Per 100 People
1960	0.09438
1965	0.12063
1970	0.12453
1975	0.15873
1976	0.16372
1977	0.1755
1978	0.19557
1979	0.22013
1980	0.2548
1981	0.28294
1982	0.30773
1983	0.31843
1984	0.33184
1985	0.36504
1986	0.40218
1987	0.44205
1988	0.4736
1989	0.48465
1990	0.58765
1991	0.70146
1992	0.88002
1993	0.9765
1994	1.26986
1995	1.67084
1996	2.09391
1997	2.45652
1998	2.70842
1999	2.91459
2000	3.14957
2001	3.36537
2002	3.5631
2003	3.65374
2004	4.6403
2005	5.95813
2006	6.44833
2007	8.38215
2008	12.86338
2009	14.54398
2010	16.87711
2011	15.71685
2012	15.26132
2013	12.18997
2014	10.27902
2015	4.01997
2016	4.11807
2017	4.23196