Year	Cases per 100,000
1990	8.51
1991	8.54
1992	8.57
1993	8.6
1994	8.63
1995	8.67
1996	8.67
1997	8.67
1998	8.67
1999	8.68
2000	8.69
2001	8.6
2002	8.51
2003	8.43
2004	8.35
2005	8.27
2006	8.29
2007	8.3
2008	8.32
2009	8.33
2010	8.35
2011	8.4
2012	8.45
2013	8.5
2014	8.55
2015	8.6
2016	8.66