Year	Cases per 100,000
1990	25.15
1991	25.35
1992	25.69
1993	25.87
1994	25.93
1995	26.25
1996	26.28
1997	26.56
1998	26.73
1999	27.01
2000	27.2
2001	27.53
2002	27.9
2003	28.27
2004	28.65
2005	29.02
2006	29.16
2007	29.01
2008	28.86
2009	28.71
2010	28.56
2011	28.44
2012	28.34
2013	28.21
2014	28.1
2015	27.98
2016	27.75