Year	Cases per 100,000
1990	13.92
1991	13.81
1992	13.73
1993	13.71
1994	13.43
1995	13.44
1996	13.32
1997	13.15
1998	12.99
1999	12.8
2000	12.71
2001	12.69
2002	11.97
2003	11.59
2004	11.26
2005	11.28
2006	11
2007	10.66
2008	10.42
2009	10.21
2010	9.79
2011	9.47
2012	9.09
2013	8.74
2014	8.5
2015	8.4
2016	8.29