Year	Cases per 100,000
1990	9.18
1991	8.92
1992	8.7
1993	8.5
1994	8.38
1995	8.23
1996	8.05
1997	8.11
1998	8.15
1999	8.37
2000	8.72
2001	8.82
2002	8.99
2003	9.11
2004	9.27
2005	9.45
2006	9.4
2007	9.42
2008	9.34
2009	9.27
2010	9.3
2011	9.27
2012	9.24
2013	9.21
2014	9.14
2015	9.05
2016	8.95