Year	Cases per 100,000
1990	14.4
1991	14.44
1992	14.49
1993	14.55
1994	14.6
1995	14.67
1996	14.39
1997	14.12
1998	13.86
1999	13.61
2000	13.37
2001	13.08
2002	12.81
2003	12.55
2004	12.29
2005	12.05
2006	12.01
2007	11.96
2008	11.91
2009	11.87
2010	11.84
2011	11.75
2012	11.66
2013	11.58
2014	11.5
2015	11.42
2016	11.35