Year	Cases per 100,000
1990	6.04
1991	6.01
1992	5.99
1993	5.97
1994	5.95
1995	5.94
1996	5.99
1997	6.04
1998	6.1
1999	6.16
2000	6.22
2001	6.63
2002	7.08
2003	7.57
2004	8.09
2005	8.65
2006	9.14
2007	9.66
2008	10.21
2009	10.79
2010	11.42
2011	11.25
2012	11.08
2013	10.91
2014	10.75
2015	10.59
2016	10.44