Year	Cases per 100,000
1990	9.95
1991	9.9
1992	9.86
1993	9.82
1994	9.78
1995	9.75
1996	9.61
1997	9.48
1998	9.35
1999	9.23
2000	9.11
2001	9.04
2002	8.98
2003	8.92
2004	8.86
2005	8.81
2006	8.81
2007	8.8
2008	8.8
2009	8.8
2010	8.81
2011	8.82
2012	8.84
2013	8.87
2014	8.89
2015	8.91
2016	8.94