Year	Cases per 100,000
1990	2.87
1991	2.87
1992	2.87
1993	2.87
1994	2.86
1995	2.86
1996	2.86
1997	2.86
1998	2.87
1999	2.85
2000	2.84
2001	2.85
2002	2.85
2003	2.85
2004	2.85
2005	2.85
2006	2.85
2007	2.84
2008	2.84
2009	2.85
2010	2.85
2011	2.87
2012	2.9
2013	2.92
2014	2.94
2015	2.96
2016	2.99