Year	Cases per 100,000
1990	5.28
1991	5.26
1992	5.24
1993	5.22
1994	5.21
1995	5.21
1996	5.22
1997	5.24
1998	5.27
1999	5.29
2000	5.32
2001	5.36
2002	5.42
2003	5.48
2004	5.53
2005	5.58
2006	5.58
2007	5.58
2008	5.58
2009	5.58
2010	5.6
2011	5.64
2012	5.7
2013	5.75
2014	5.8
2015	5.87
2016	5.92