Year	Cases per 100,000
1990	5.95
1991	5.32
1992	5.04
1993	5.38
1994	5.41
1995	5.25
1996	5.28
1997	5.42
1998	5.14
1999	5.12
2000	5.12
2001	5.02
2002	5.13
2003	5.3
2004	5.42
2005	5.47
2006	5.49
2007	5.48
2008	5.46
2009	5.19
2010	4.73
2011	4.35
2012	3.95
2013	3.54
2014	3.48
2015	3.56
2016	3.61