Year	Cases per 100,000
1990	4.95
1991	4.84
1992	4.59
1993	4.65
1994	4.54
1995	4.55
1996	4.62
1997	4.56
1998	4.52
1999	4.57
2000	4.61
2001	4.62
2002	4.78
2003	4.95
2004	5.19
2005	5.29
2006	5.16
2007	4.93
2008	4.83
2009	4.7
2010	4.59
2011	4.5
2012	4.4
2013	4.27
2014	4.18
2015	4.1
2016	4.03