Year	Cases per 100,000
1990	9.43
1991	9.2
1992	8.89
1993	8.63
1994	8.41
1995	8.02
1996	7.76
1997	7.77
1998	7.66
1999	7.59
2000	7.7
2001	7.79
2002	7.94
2003	8.13
2004	7.99
2005	8.14
2006	8.1
2007	8.38
2008	8.43
2009	8.41
2010	8.43
2011	8.49
2012	8.53
2013	8.6
2014	8.63
2015	8.61
2016	8.6