Year	Cases per 100,000
1990	8.06
1991	7.99
1992	7.92
1993	7.85
1994	7.79
1995	7.73
1996	7.62
1997	7.51
1998	7.41
1999	7.31
2000	7.22
2001	7.11
2002	7.01
2003	6.91
2004	6.81
2005	6.71
2006	6.89
2007	7.06
2008	7.25
2009	7.44
2010	7.64
2011	7.77
2012	7.9
2013	8.04
2014	8.18
2015	8.33
2016	8.48