Year	Cases per 100,000
1990	9.17
1991	9.2
1992	9.24
1993	9.16
1994	9.31
1995	9.28
1996	9.38
1997	9.25
1998	8.95
1999	8.85
2000	8.91
2001	8.95
2002	8.9
2003	8.98
2004	9.16
2005	9.4
2006	9.59
2007	9.62
2008	9.53
2009	9.45
2010	9.5
2011	9.51
2012	9.75
2013	9.64
2014	9.67
2015	9.66
2016	9.65