Year	Cases per 100,000
1980	16.83182
1981	14.83364
1982	15.20545
1983	16.20727
1984	16.80909
1985	13.04091
1986	15.74273
1987	13.04455
1988	15.55636
1989	17.79818
1990	18
1991	17.59
1992	17.51
1993	17.34
1994	17.16
1995	16.79
1996	16.86
1997	16.13
1998	15.6
1999	15.56
2000	15.15
2001	14.8
2002	14.33
2003	13.99
2004	13.48
2005	13.14
2006	12.62
2007	12.28
2008	11.92
2009	11.66
2010	11.62
2011	11.69
2012	11.63
2013	11.5
2014	11.33
2015	11.37
2016	11.35