Year Cases per 100,000 1990 7.96 1991 7.99 1992 8.03 1993 8.08 1994 8.12 1995 8.16 1996 8.15 1997 8.14 1998 8.14 1999 8.13 2000 8.12 2001 8.17 2002 8.22 2003 8.27 2004 8.33 2005 8.38 2006 8.44 2007 8.49 2008 8.54 2009 8.6 2010 8.66 2011 8.71 2012 8.76 2013 8.81 2014 8.86 2015 8.91 2016 8.96