Year	Cases per 100,000
1990	7.65
1991	7.69
1992	7.74
1993	7.79
1994	7.83
1995	7.89
1996	7.96
1997	8.05
1998	8.13
1999	8.21
2000	8.3
2001	8.41
2002	8.53
2003	8.65
2004	8.77
2005	8.89
2006	8.96
2007	9.03
2008	9.11
2009	9.18
2010	9.26
2011	9.32
2012	9.39
2013	9.45
2014	9.51
2015	9.58
2016	9.65