Year	Cases per 100,000
1990	9.1
1991	8.87
1992	8.64
1993	8.06
1994	7.75
1995	7.61
1996	7.45
1997	7.37
1998	7.05
1999	7.09
2000	7.23
2001	7.48
2002	7.62
2003	7.65
2004	7.63
2005	7.68
2006	7.72
2007	7.88
2008	7.98
2009	8.08
2010	8.2
2011	8.14
2012	8.04
2013	7.94
2014	7.83
2015	7.74
2016	7.64