Year	Cases per 100,000
1990	5.19
1991	5.22
1992	5.26
1993	5.29
1994	5.33
1995	5.37
1996	5.39
1997	5.42
1998	5.45
1999	5.48
2000	5.51
2001	5.52
2002	5.53
2003	5.55
2004	5.56
2005	5.58
2006	5.57
2007	5.55
2008	5.54
2009	5.53
2010	5.53
2011	5.49
2012	5.47
2013	5.45
2014	5.42
2015	5.4
2016	5.39