Year	Cases per 100,000
1990	15.34
1991	15.31
1992	15.29
1993	15.27
1994	15.26
1995	15.25
1996	15.33
1997	15.42
1998	15.52
1999	15.62
2000	15.74
2001	15.76
2002	15.8
2003	15.84
2004	15.89
2005	15.96
2006	15.81
2007	15.65
2008	15.51
2009	15.37
2010	15.25
2011	15.17
2012	15.11
2013	15.04
2014	14.97
2015	14.91
2016	14.86