Year	Cases per 100,000
1990	5.83
1991	5.85
1992	5.88
1993	5.91
1994	5.94
1995	5.98
1996	5.94
1997	5.92
1998	5.89
1999	5.86
2000	5.84
2001	5.77
2002	5.71
2003	5.64
2004	5.58
2005	5.53
2006	5.48
2007	5.43
2008	5.39
2009	5.34
2010	5.31
2011	5.27
2012	5.23
2013	5.2
2014	5.16
2015	5.13
2016	5.1