Year	Per 100 People
1970	0.58556
1975	1.01129
1976	1.03855
1977	1.03557
1978	1.12402
1982	1.30934
1983	1.39478
1984	1.40607
1985	1.20513
1986	1.53866
1987	1.61616
1988	1.65033
1989	1.6801
1990	1.77312
1991	2.02085
1992	2.2964
1993	2.55172
1994	2.68805
1995	2.50542
1996	2.60185
1997	2.74287
1998	2.90322
1999	3.03289
2000	3.58797
2001	3.5723
2002	3.40851
2003	3.28703
2004	3.31091
2005	3.32617
2006	3.49432
2007	4.00995
2008	4.61525
2009	3.12802
2010	3.00937
2011	2.42815
2012	1.95891
2013	2.17151
2014	2.21248
2015	1.8129
2016	1.68453
2017	1.26663