Year	Cases per 100,000
1990	15.42
1991	15.01
1992	14.63
1993	14.25
1994	13.89
1995	13.54
1996	13.63
1997	13.72
1998	13.81
1999	13.91
2000	14.01
2001	14.08
2002	14.16
2003	14.24
2004	14.32
2005	14.42
2006	14.38
2007	14.33
2008	14.29
2009	14.25
2010	14.22
2011	14.13
2012	14.05
2013	13.97
2014	13.89
2015	13.81
2016	13.75