Year	Cases per 100,000
1990	8.38
1991	8.28
1992	8.18
1993	8.07
1994	7.96
1995	7.84
1996	7.53
1997	7.42
1998	7.29
1999	6.95
2000	6.89
2001	6.86
2002	6.85
2003	6.92
2004	6.92
2005	6.98
2006	6.96
2007	6.96
2008	6.95
2009	7.01
2010	7.03
2011	7.09
2012	7.19
2013	7.27
2014	7.36
2015	7.44
2016	7.5