Year	Cases per 100,000
1990	3.25
1991	3.24
1992	3.14
1993	3.06
1994	2.98
1995	2.92
1996	2.86
1997	2.81
1998	2.75
1999	2.7
2000	2.67
2001	2.64
2002	2.63
2003	2.61
2004	2.6
2005	2.6
2006	2.6
2007	2.61
2008	2.62
2009	2.62
2010	2.63
2011	2.67
2012	2.7
2013	2.74
2014	2.77
2015	2.8
2016	2.84