Year	Cases per 100,000
1990	9.95
1991	9.95
1992	9.91
1993	9.88
1994	9.88
1995	9.85
1996	9.76
1997	9.68
1998	9.47
1999	9.34
2000	9.17
2001	9.06
2002	8.9
2003	8.63
2004	8.22
2005	8.12
2006	8.11
2007	7.91
2008	8.01
2009	8.13
2010	8.23
2011	8.29
2012	8.34
2013	8.35
2014	8.39
2015	8.4
2016	8.38