Year	Cases per 100,000
1990	9.56
1991	9.53
1992	9.52
1993	9.5
1994	9.49
1995	9.48
1996	9.43
1997	9.39
1998	9.35
1999	9.31
2000	9.27
2001	9.25
2002	9.23
2003	9.22
2004	9.2
2005	9.2
2006	9.22
2007	9.24
2008	9.26
2009	9.29
2010	9.33
2011	9.33
2012	9.35
2013	9.36
2014	9.38
2015	9.39
2016	9.42