Year	Cases per 100,000
1990	13.69
1991	13.85
1992	14.01
1993	14.17
1994	14.35
1995	14.53
1996	14.46
1997	14.39
1998	14.34
1999	14.28
2000	14.24
2001	14.32
2002	14.41
2003	14.51
2004	14.61
2005	14.73
2006	14.59
2007	14.45
2008	14.32
2009	14.19
2010	14.08
2011	13.97
2012	13.87
2013	13.78
2014	13.68
2015	13.59
2016	13.51