Year	Cases per 100,000
1990	8.81
1991	8.76
1992	8.72
1993	8.68
1994	8.65
1995	8.62
1996	8.41
1997	8.21
1998	8.02
1999	7.83
2000	7.66
2001	7.45
2002	7.25
2003	7.06
2004	6.88
2005	6.7
2006	6.55
2007	6.4
2008	6.26
2009	6.12
2010	5.99
2011	5.98
2012	5.97
2013	5.96
2014	5.95
2015	5.94
2016	5.93