Year	Cases per 100,000
1990	6.94
1991	7.05
1992	7.07
1993	7.19
1994	7.21
1995	7.27
1996	7.25
1997	7.35
1998	7.5
1999	7.62
2000	7.79
2001	7.83
2002	8.1
2003	8.31
2004	8.49
2005	8.92
2006	9
2007	9.02
2008	9.07
2009	9.16
2010	9.18
2011	9.2
2012	9.18
2013	9.12
2014	9
2015	8.84
2016	8.73