Year	Cases per 100,000
1990	8.11
1991	8.11
1992	8.11
1993	8.12
1994	8.12
1995	8.12
1996	8.22
1997	8.33
1998	8.43
1999	8.54
2000	8.65
2001	8.71
2002	8.78
2003	8.84
2004	8.91
2005	8.97
2006	9.06
2007	9.14
2008	9.22
2009	9.31
2010	9.4
2011	9.45
2012	9.5
2013	9.55
2014	9.6
2015	9.65
2016	9.71