Year	Cases per 100,000
1990	12.44
1991	12.64
1992	12.85
1993	13.07
1994	13.29
1995	13.53
1996	13.43
1997	13.34
1998	13.25
1999	13.17
2000	13.1
2001	12.73
2002	12.38
2003	12.04
2004	11.71
2005	11.4
2006	11.11
2007	10.82
2008	10.55
2009	10.28
2010	10.03
2011	9.94
2012	9.86
2013	9.77
2014	9.69
2015	9.61
2016	9.54