Year	Cases per 100,000
1990	9.83
1991	9.77
1992	9.71
1993	10.08
1994	10.17
1995	9.89
1996	8.91
1997	8.51
1998	8.67
1999	8.41
2000	8.12
2001	8.69
2002	8.86
2003	9.41
2004	9.79
2005	10.48
2006	11.33
2007	11.71
2008	11.58
2009	11.69
2010	11.76
2011	11.94
2012	11.86
2013	12.11
2014	11.7
2015	11.57
2016	11.57