Year	Cases per 100,000
1990	13.21
1991	13.57
1992	13.96
1993	14.39
1994	14.81
1995	15.16
1996	15.85
1997	16.26
1998	16.35
1999	16.31
2000	16.49
2001	16.28
2002	16.16
2003	15.83
2004	15.78
2005	15.31
2006	15.05
2007	14.71
2008	14.2
2009	14
2010	13.81
2011	13.43
2012	13.35
2013	12.95
2014	12.7
2015	12.47
2016	12.25