Year	Cases per 100,000
1990	7.53
1991	7.73
1992	7.95
1993	8.29
1994	8.51
1995	8.91
1996	9.31
1997	9.67
1998	10.16
1999	10.67
2000	11.19
2001	11.79
2002	12.45
2003	13.02
2004	13.77
2005	14.41
2006	14.99
2007	15.66
2008	16.4
2009	17.08
2010	17.9
2011	18.16
2012	18.38
2013	18.33
2014	17.82
2015	17.49
2016	17.22