Year	Cases per 100,000
1990	8.63
1991	8.68
1992	8.74
1993	8.8
1994	8.86
1995	8.94
1996	8.96
1997	9
1998	9.04
1999	9.08
2000	9.14
2001	9.12
2002	9.11
2003	9.1
2004	9.09
2005	9.09
2006	9.07
2007	9.04
2008	9.02
2009	9
2010	8.99
2011	8.99
2012	9
2013	9.01
2014	9.02
2015	9.04
2016	9.06