Year	Cases per 100,000
1990	15.98
1991	15.1
1992	14.28
1993	13.51
1994	12.78
1995	12.1
1996	11.9
1997	11.71
1998	11.53
1999	11.35
2000	11.19
2001	11.53
2002	11.88
2003	12.24
2004	12.62
2005	13.01
2006	13.51
2007	14.04
2008	14.58
2009	15.16
2010	15.76
2011	16.01
2012	16.27
2013	16.53
2014	16.79
2015	17.06
2016	17.35