Year	Cases per 100,000
1990	17.62
1991	16.93
1992	16.31
1993	15.69
1994	15
1995	14.38
1996	13.48
1997	12.87
1998	12.32
1999	12.04
2000	11.52
2001	11.1
2002	10.98
2003	10.66
2004	10.25
2005	10.22
2006	9.91
2007	9.63
2008	9.38
2009	9.33
2010	9.12
2011	9.2
2012	9.14
2013	8.98
2014	8.99
2015	8.82
2016	8.69