Year	Per 100 People
1979	0.82897
1982	0.76822
1983	0.83053
1984	0.95595
1985	1.04526
1986	1.22104
1987	1.35294
1988	1.44722
1989	1.55236
1990	1.65718
1991	1.72592
1992	1.83766
1993	2.31514
1994	2.50812
1995	2.60517
1996	2.67657
1997	3.10162
1998	3.43593
1999	3.71477
2000	3.97247
2001	4.22558
2002	5.12233
2003	4.94966
2004	4.74918
2005	4.54915
2006	4.24358
2007	4.15321
2008	4.06339
2009	8.25014
2010	8.18006
2011	8.08458
2012	7.50378
2013	5.52817
2014	1.81064
2015	1.31398
2016	0.57433
2017	0.65723