Year	Cases per 100,000
1990	8.22
1991	8.27
1992	8.33
1993	8.39
1994	8.45
1995	8.52
1996	8.57
1997	8.63
1998	8.7
1999	8.76
2000	8.82
2001	8.87
2002	8.91
2003	8.96
2004	9.01
2005	9.06
2006	9.06
2007	9.06
2008	9.06
2009	9.06
2010	9.06
2011	9.06
2012	9.07
2013	9.08
2014	9.09
2015	9.09
2016	9.11