Year	Cases per 100,000
1990	8.27
1991	8.39
1992	8.5
1993	8.66
1994	8.81
1995	8.99
1996	9.06
1997	9.1
1998	9.15
1999	9.24
2000	9.35
2001	9.22
2002	9.11
2003	9.02
2004	8.95
2005	8.88
2006	8.89
2007	8.88
2008	8.88
2009	8.86
2010	8.88
2011	8.87
2012	8.86
2013	8.85
2014	8.84
2015	8.83
2016	8.81