Year	Cases per 100,000
1990	16.01
1991	15.54
1992	15
1993	14.45
1994	13.96
1995	13.32
1996	12.68
1997	12.15
1998	11.84
1999	11.39
2000	10.78
2001	10.32
2002	9.97
2003	9.71
2004	9.46
2005	9.33
2006	9.19
2007	9.12
2008	9.08
2009	9.09
2010	9.04
2011	8.98
2012	8.9
2013	8.86
2014	8.73
2015	8.64
2016	8.56