Year	Cases per 100,000
1990	9.23
1991	8.95
1992	8.78
1993	8.64
1994	8.46
1995	8.33
1996	8.16
1997	8.02
1998	8.06
1999	8.18
2000	8.23
2001	8.34
2002	8.54
2003	8.77
2004	8.8
2005	8.66
2006	8.58
2007	8.62
2008	8.78
2009	8.85
2010	8.9
2011	8.85
2012	8.74
2013	8.63
2014	8.56
2015	8.52
2016	8.45