Year	Cases per 100,000
1990	8.97
1991	8.77
1992	8.73
1993	8.59
1994	8.42
1995	8.3
1996	7.96
1997	7.79
1998	7.61
1999	7.63
2000	7.75
2001	7.95
2002	7.98
2003	8.02
2004	8.09
2005	8.13
2006	8.26
2007	8.31
2008	8.35
2009	8.38
2010	8.37
2011	8.44
2012	8.48
2013	8.52
2014	8.55
2015	8.6
2016	8.65