Year	Cases per 100,000
1990	10.08
1991	9.99
1992	9.91
1993	9.82
1994	9.74
1995	9.66
1996	10.37
1997	11.14
1998	11.96
1999	12.85
2000	13.82
2001	14.13
2002	14.46
2003	14.8
2004	15.15
2005	15.52
2006	16.28
2007	17.09
2008	17.95
2009	18.86
2010	19.83
2011	19.64
2012	19.46
2013	19.28
2014	19.1
2015	18.92
2016	18.75