Year	Cases per 100,000
1990	2.8
1991	2.8
1992	2.79
1993	2.79
1994	2.78
1995	2.79
1996	2.79
1997	2.79
1998	2.79
1999	2.79
2000	2.79
2001	2.76
2002	2.73
2003	2.7
2004	2.68
2005	2.65
2006	2.65
2007	2.64
2008	2.64
2009	2.64
2010	2.64
2011	2.64
2012	2.65
2013	2.65
2014	2.65
2015	2.64
2016	2.64