Year	Cases per 100,000
1990	8.95
1991	8.98
1992	9.02
1993	9.05
1994	9.08
1995	9.12
1996	9.16
1997	9.21
1998	9.26
1999	9.31
2000	9.36
2001	9.32
2002	9.29
2003	9.25
2004	9.21
2005	9.17
2006	9.19
2007	9.21
2008	9.22
2009	9.24
2010	9.26
2011	9.31
2012	9.36
2013	9.41
2014	9.46
2015	9.51
2016	9.56