Year	Per 100 People
1960	0
1965	0.04821
1970	0.1304
1975	0.1749
1976	0.188
1977	0.21747
1978	0.24421
1979	0.26896
1980	0.29237
1981	0.31486
1982	0.33645
1983	0.35704
1984	0.40525
1985	0.44859
1986	0.48447
1987	0.53444
1988	0.59645
1989	0.72292
1990	0.79326
1991	0.85899
1992	0.88235
1993	0.89255
1994	0.92412
1995	0.92071
1996	1.01918
1997	1.09711
1998	1.20803
1999	1.23306
2000	1.24881
2001	1.59672
2002	1.8013
2003	2.27105
2004	2.5255
2005	2.7695
2006	3.04282
2007	4.05614
2008	4.3834
2009	4.57288
2010	3.07529
2011	3.27583
2012	3.31552
2013	3.10182
2014	3.09461
2015	1.87787
2016	1.64014
2017	2.11472