Year	Cases per 100,000
1990	5.79
1991	5.78
1992	5.78
1993	5.77
1994	5.77
1995	5.77
1996	5.8
1997	5.83
1998	5.87
1999	5.9
2000	5.94
2001	5.95
2002	5.95
2003	5.96
2004	5.97
2005	5.98
2006	5.98
2007	5.99
2008	5.99
2009	6
2010	6
2011	6.03
2012	6.05
2013	6.08
2014	6.11
2015	6.14
2016	6.16