Year	Cases per 100,000
1990	8.21
1991	8.25
1992	8.31
1993	8.37
1994	8.43
1995	8.49
1996	8.53
1997	8.57
1998	8.62
1999	8.66
2000	8.71
2001	8.76
2002	8.81
2003	8.86
2004	8.92
2005	8.98
2006	9.03
2007	9.07
2008	9.12
2009	9.17
2010	9.22
2011	9.22
2012	9.22
2013	9.23
2014	9.23
2015	9.23
2016	9.24