Year	Cases per 100,000
1990	26.71
1991	26.57
1992	26.44
1993	27.07
1994	27.08
1995	27.51
1996	27.46
1997	27.12
1998	27.04
1999	27.21
2000	27.34
2001	27.55
2002	27.08
2003	26.92
2004	26.33
2005	26.27
2006	26.15
2007	25.68
2008	25.25
2009	24.8
2010	24.59
2011	24.5
2012	24.37
2013	24.15
2014	23.88
2015	23.57
2016	23.35