Year	Cases per 100,000
1990	8.43
1991	8.42
1992	8.4
1993	8.39
1994	8.38
1995	8.4
1996	8.55
1997	8.73
1998	8.93
1999	9.19
2000	9.46
2001	9.5
2002	9.52
2003	9.53
2004	9.52
2005	9.48
2006	9.27
2007	9.08
2008	8.9
2009	8.7
2010	8.53
2011	8.44
2012	8.37
2013	8.3
2014	8.25
2015	8.19
2016	8.13