Year	Cases per 100,000
1990	9
1991	9.05
1992	9.14
1993	9.23
1994	9.22
1995	8.81
1996	8.93
1997	8.69
1998	8.62
1999	8.37
2000	8.33
2001	8.42
2002	8.4
2003	8.28
2004	8.03
2005	7.84
2006	7.86
2007	7.79
2008	7.75
2009	7.59
2010	7.37
2011	7.25
2012	7.01
2013	7.02
2014	7.08
2015	6.97
2016	6.91