Year	Cases per 100,000
1990	6.53
1991	6.47
1992	6.45
1993	6.3
1994	6.49
1995	6.5
1996	6.26
1997	6.28
1998	6.24
1999	6.08
2000	6.03
2001	5.84
2002	5.99
2003	6.17
2004	6.4
2005	6.52
2006	6.48
2007	6.41
2008	6.44
2009	6.22
2010	6.07
2011	5.9
2012	5.63
2013	5.51
2014	5.65
2015	5.61
2016	5.57