Year	Cases per 100,000
1990	8.1
1991	8
1992	7.91
1993	7.82
1994	7.74
1995	7.66
1996	8.05
1997	8.46
1998	8.9
1999	9.36
2000	9.86
2001	10.23
2002	10.63
2003	11.05
2004	11.49
2005	11.96
2006	12.5
2007	13.07
2008	13.67
2009	14.31
2010	14.99
2011	15.24
2012	15.5
2013	15.77
2014	16.04
2015	16.31
2016	16.6