Year	Cases per 100,000
1990	8.68
1991	8.73
1992	8.78
1993	8.83
1994	8.88
1995	8.94
1996	9
1997	9.07
1998	9.14
1999	9.21
2000	9.28
2001	9.34
2002	9.4
2003	9.46
2004	9.52
2005	9.59
2006	9.59
2007	9.58
2008	9.59
2009	9.59
2010	9.6
2011	9.58
2012	9.56
2013	9.55
2014	9.53
2015	9.52
2016	9.51