Year	Cases per 100,000
1990	16.86
1991	16.77
1992	16.68
1993	16.6
1994	16.52
1995	16.45
1996	16.23
1997	16.02
1998	15.82
1999	15.62
2000	15.43
2001	15.2
2002	14.99
2003	14.78
2004	14.58
2005	14.39
2006	14.33
2007	14.26
2008	14.2
2009	14.14
2010	14.09
2011	14.07
2012	14.05
2013	14.04
2014	14.02
2015	14
2016	14