Year	Cases per 100,000
1990	2.95
1991	2.92
1992	2.88
1993	2.86
1994	2.86
1995	2.9
1996	2.88
1997	2.94
1998	2.96
1999	3.06
2000	3.15
2001	3.12
2002	3.08
2003	3.06
2004	2.97
2005	2.84
2006	2.75
2007	2.61
2008	2.52
2009	2.48
2010	2.31
2011	2.2
2012	2.14
2013	2.08
2014	2.04
2015	2
2016	1.95