Year	Cases per 100,000
1990	6.05
1991	6.04
1992	6.03
1993	6.02
1994	6.02
1995	6.02
1996	5.97
1997	5.92
1998	5.88
1999	5.83
2000	5.79
2001	5.8
2002	5.82
2003	5.83
2004	5.84
2005	5.86
2006	5.9
2007	5.94
2008	5.98
2009	6.03
2010	6.08
2011	6.11
2012	6.14
2013	6.17
2014	6.2
2015	6.23
2016	6.27