Year	Cases per 100,000
1990	6.09
1991	6.06
1992	6.04
1993	6.01
1994	5.99
1995	5.97
1996	5.96
1997	5.95
1998	5.94
1999	5.94
2000	5.94
2001	5.94
2002	5.94
2003	5.95
2004	5.95
2005	5.96
2006	5.98
2007	5.99
2008	6.01
2009	6.02
2010	6.04
2011	6.06
2012	6.08
2013	6.1
2014	6.12
2015	6.14
2016	6.17