Year	Cases per 100,000
1990	9.03
1991	9.02
1992	9
1993	9.01
1994	8.99
1995	8.99
1996	8.81
1997	8.66
1998	8.51
1999	8.54
2000	8.47
2001	8.44
2002	8.35
2003	8.58
2004	8.76
2005	8.98
2006	8.96
2007	8.9
2008	8.84
2009	8.78
2010	8.71
2011	8.84
2012	8.93
2013	8.92
2014	8.9
2015	8.9
2016	8.9