Year	Cases per 100,000
1990	8.12
1991	8.2
1992	8.27
1993	8.34
1994	8.42
1995	8.5
1996	8.56
1997	8.62
1998	8.68
1999	8.73
2000	8.8
2001	8.82
2002	8.84
2003	8.86
2004	8.88
2005	8.91
2006	8.9
2007	8.87
2008	8.85
2009	8.83
2010	8.83
2011	8.8
2012	8.77
2013	8.75
2014	8.73
2015	8.7
2016	8.65