Year	Cases per 100,000
1990	6.11
1991	6.07
1992	5.86
1993	5.88
1994	5.88
1995	5.73
1996	5.52
1997	5.58
1998	5.95
1999	6.1
2000	6.16
2001	6.37
2002	6.65
2003	6.83
2004	6.8
2005	6.8
2006	6.54
2007	6.43
2008	6.38
2009	6.34
2010	6.14
2011	6.09
2012	6.1
2013	6.15
2014	6.06
2015	6.17
2016	6.24