Year	Cases per 100,000
1990	4.53
1991	4.09
1992	3.89
1993	4.1
1994	4.21
1995	4.71
1996	4.91
1997	4.95
1998	4.85
1999	5
2000	5.05
2001	4.65
2002	4.58
2003	4.19
2004	3.99
2005	4.03
2006	4
2007	4.12
2008	4.22
2009	4.22
2010	4.13
2011	3.83
2012	3.78
2013	3.47
2014	3.6
2015	3.62
2016	3.66