Year	Cases per 100,000
1990	7.02
1991	7.01
1992	6.99
1993	6.98
1994	6.97
1995	6.96
1996	6.83
1997	6.73
1998	6.55
1999	6.3
2000	6.16
2001	6.02
2002	5.96
2003	5.84
2004	5.82
2005	5.8
2006	5.81
2007	5.82
2008	5.84
2009	5.84
2010	5.83
2011	5.92
2012	5.98
2013	6.04
2014	6.11
2015	6.19
2016	6.27