Year	Cases per 100,000
1990	5.46
1991	5.74
1992	5.8
1993	5.76
1994	5.64
1995	5.71
1996	5.54
1997	5.65
1998	5.44
1999	5.34
2000	5.11
2001	5.16
2002	5.04
2003	4.94
2004	4.58
2005	4.65
2006	4.67
2007	4.89
2008	4.99
2009	4.98
2010	5.21
2011	5.14
2012	5.14
2013	5.15
2014	5.17
2015	5.18
2016	5.19