Year	Cases per 100,000
1990	13.62
1991	13.43
1992	13.39
1993	13.46
1994	13.16
1995	13.04
1996	12.97
1997	12.96
1998	12.81
1999	12.81
2000	12.94
2001	12.6
2002	12.53
2003	12.29
2004	12.18
2005	12.19
2006	12.19
2007	12.19
2008	11.95
2009	11.86
2010	11.78
2011	11.59
2012	11.38
2013	11.11
2014	10.84
2015	10.61
2016	10.38