Year	Cases per 100,000
1990	11.23
1991	10.74
1992	10.27
1993	9.82
1994	9.4
1995	8.99
1996	9.07
1997	9.16
1998	9.25
1999	9.34
2000	9.44
2001	9.75
2002	10.08
2003	10.42
2004	10.77
2005	11.14
2006	10.92
2007	10.7
2008	10.48
2009	10.28
2010	10.08
2011	9.94
2012	9.8
2013	9.67
2014	9.54
2015	9.41
2016	9.29