Year	Cases per 100,000
1990	5.21
1991	5.15
1992	5.09
1993	5.03
1994	4.97
1995	4.93
1996	4.96
1997	5.03
1998	5.11
1999	5.25
2000	5.41
2001	5.44
2002	5.48
2003	5.51
2004	5.53
2005	5.55
2006	5.5
2007	5.45
2008	5.4
2009	5.35
2010	5.3
2011	5.3
2012	5.3
2013	5.31
2014	5.32
2015	5.33
2016	5.34