Year	Cases per 100,000
1990	8.76
1991	8.81
1992	8.87
1993	8.92
1994	8.97
1995	9.03
1996	9.02
1997	9.01
1998	9
1999	8.99
2000	8.98
2001	8.93
2002	8.89
2003	8.85
2004	8.81
2005	8.77
2006	8.78
2007	8.78
2008	8.79
2009	8.8
2010	8.81
2011	8.81
2012	8.81
2013	8.81
2014	8.82
2015	8.82
2016	8.83