Year	Cases per 100,000
1990	17.41
1991	16.97
1992	16.58
1993	16.16
1994	15.63
1995	15.54
1996	15.11
1997	15.41
1998	14.95
1999	15.1
2000	15.22
2001	15.57
2002	16.05
2003	16.25
2004	16.18
2005	16.37
2006	16.35
2007	16.33
2008	16.26
2009	16.05
2010	15.85
2011	15.72
2012	15.46
2013	15.17
2014	14.93
2015	14.85
2016	14.82