Year	Cases per 100,000
1990	15.48
1991	15.3
1992	14.83
1993	14.39
1994	14.22
1995	13.95
1996	13.88
1997	13.36
1998	13.09
1999	13.14
2000	13.32
2001	13.5
2002	13.63
2003	13.75
2004	13.81
2005	13.8
2006	13.85
2007	13.87
2008	13.88
2009	13.88
2010	13.86
2011	13.85
2012	13.83
2013	13.78
2014	13.69
2015	13.56
2016	13.41