Year	Cases per 100,000
1990	13.11
1991	12.67
1992	12.38
1993	12.11
1994	11.89
1995	11.67
1996	11.36
1997	11.06
1998	10.92
1999	10.82
2000	10.79
2001	10.18
2002	9.99
2003	9.87
2004	9.44
2005	9.36
2006	9.06
2007	8.82
2008	8.62
2009	8.56
2010	8.6
2011	8.67
2012	8.74
2013	8.77
2014	8.79
2015	8.77
2016	8.77