Year	Cases per 100,000
1990	7.79
1991	7.81
1992	7.84
1993	7.86
1994	7.89
1995	7.92
1996	7.97
1997	8.03
1998	8.09
1999	8.15
2000	8.21
2001	8.2
2002	8.19
2003	8.19
2004	8.18
2005	8.18
2006	8.12
2007	8.05
2008	7.99
2009	7.93
2010	7.87
2011	7.82
2012	7.77
2013	7.73
2014	7.68
2015	7.63
2016	7.59