Year	Cases per 100,000
1990	8.71
1991	8.71
1992	8.71
1993	8.71
1994	8.68
1995	8.68
1996	8.77
1997	8.87
1998	8.92
1999	9.69
2000	10.5
2001	11.46
2002	12.43
2003	13.4
2004	14.4
2005	15.55
2006	15.94
2007	15.95
2008	16.12
2009	16.21
2010	16.31
2011	16.25
2012	16.14
2013	16.01
2014	15.87
2015	15.71
2016	15.6