Year	Per 100 People
1978	5.87419
1979	6.23903
1980	6.40359
1981	6.75349
1982	7.02907
1983	7.06924
1984	7.24458
1985	7.57355
1986	7.78701
1987	8.31201
1988	8.33617
1989	8.30935
1990	8.74242
1991	9.09126
1992	9.42121
1993	9.9423
1994	10.70408
1995	11.09416
1996	11.63247
1997	12.81502
1998	14.37874
1999	15.56531
2000	14.16125
2001	12.36088
2002	12.28553
2003	11.88533
2004	12.99299
2005	14.12575
2006	14.39628
2007	14.33925
2008	14.90213
2009	14.98459
2010	14.8033
2011	15.10833
2012	15.10441
2013	15.03279
2014	15.0717
2015	15.63107
2016	16.18237
2017	14.72795