Year	Cases per 100,000
1990	14.73
1991	14.45
1992	14.35
1993	13.97
1994	13.36
1995	12.95
1996	12.46
1997	11.91
1998	11.44
1999	11.15
2000	11.15
2001	11.16
2002	11.07
2003	10.96
2004	10.95
2005	10.78
2006	10.43
2007	10.03
2008	9.69
2009	9.36
2010	9.06
2011	8.99
2012	8.66
2013	8.54
2014	8.43
2015	8.21
2016	8.01