Year	Cases per 100,000
1990	7.85
1991	7.87
1992	7.88
1993	7.81
1994	7.72
1995	7.96
1996	7.94
1997	8.11
1998	8.54
1999	8.51
2000	8.31
2001	8.31
2002	7.88
2003	7.78
2004	7.72
2005	7.84
2006	8.06
2007	8.37
2008	8.69
2009	8.72
2010	8.89
2011	8.97
2012	9.07
2013	9.12
2014	9.19
2015	9.27
2016	9.25