Year	Cases per 100,000
1990	10.25
1991	10.6
1992	10.95
1993	11.19
1994	11.54
1995	12.02
1996	12.43
1997	13.19
1998	14.05
1999	13.57
2000	13.51
2001	13.3
2002	13.03
2003	12.8
2004	12.71
2005	12.57
2006	12.41
2007	12.37
2008	12.32
2009	12.21
2010	12.22
2011	12.27
2012	12.31
2013	12.28
2014	12.37
2015	12.55
2016	12.62