Year	Cases per 100,000
1990	2.92
1991	2.92
1992	2.93
1993	2.93
1994	2.93
1995	2.94
1996	2.93
1997	2.92
1998	2.91
1999	2.89
2000	2.87
2001	2.84
2002	2.81
2003	2.78
2004	2.76
2005	2.73
2006	2.72
2007	2.71
2008	2.7
2009	2.69
2010	2.68
2011	2.69
2012	2.7
2013	2.71
2014	2.72
2015	2.73
2016	2.74