Year	Cases per 100,000
1990	8.21
1991	8.34
1992	8.48
1993	8.49
1994	8.52
1995	8.57
1996	8.57
1997	8.61
1998	8.61
1999	8.63
2000	8.77
2001	8.78
2002	8.82
2003	8.86
2004	8.9
2005	9.05
2006	9.2
2007	9.24
2008	9.28
2009	9.34
2010	9.42
2011	9.51
2012	9.61
2013	9.71
2014	9.69
2015	9.69
2016	9.68