Year	Cases per 100,000
1990	2.25
1991	2.36
1992	2.47
1993	2.59
1994	2.72
1995	2.86
1996	2.89
1997	2.93
1998	2.97
1999	3.01
2000	3.06
2001	3.03
2002	3.01
2003	2.99
2004	2.97
2005	2.95
2006	2.98
2007	3
2008	3.02
2009	3.04
2010	3.07
2011	3.11
2012	3.16
2013	3.2
2014	3.25
2015	3.3
2016	3.36