Year	Cases per 100,000
1990	5.32
1991	5.31
1992	5.31
1993	5.32
1994	5.34
1995	5.36
1996	5.41
1997	5.46
1998	5.52
1999	5.6
2000	5.54
2001	5.54
2002	5.52
2003	5.5
2004	5.52
2005	5.55
2006	5.7
2007	5.83
2008	6.07
2009	6.12
2010	6.21
2011	6.27
2012	6.23
2013	6.17
2014	6.19
2015	6.2
2016	6.21