Year	Cases per 100,000
1990	3.05
1991	3.05
1992	3.05
1993	3.04
1994	3.05
1995	3.06
1996	3.08
1997	3.11
1998	3.14
1999	3.21
2000	3.29
2001	3.41
2002	3.56
2003	3.71
2004	3.86
2005	4.02
2006	4.14
2007	4.27
2008	4.4
2009	4.54
2010	4.68
2011	4.7
2012	4.73
2013	4.77
2014	4.81
2015	4.83
2016	4.84