Year	Cases per 100,000
1990	17.32
1991	17.22
1992	17.14
1993	17.06
1994	16.97
1995	16.91
1996	16.89
1997	16.88
1998	16.88
1999	16.88
2000	16.89
2001	16.95
2002	17.01
2003	17.08
2004	17.15
2005	17.23
2006	17.25
2007	17.25
2008	17.27
2009	17.29
2010	17.32
2011	17.31
2012	17.32
2013	17.33
2014	17.34
2015	17.34
2016	17.36