Year	Cases per 100,000
1990	6.4
1991	6.54
1992	6.69
1993	6.83
1994	6.99
1995	7.15
1996	7.62
1997	8.13
1998	8.67
1999	9.26
2000	9.9
2001	10.12
2002	10.35
2003	10.58
2004	10.82
2005	11.08
2006	11.39
2007	11.71
2008	12.04
2009	12.38
2010	12.74
2011	12.8
2012	12.88
2013	12.95
2014	13.03
2015	13.11
2016	13.19