Year Cases per 100,000 1990 5.56 1991 5.64 1992 5.73 1993 5.82 1994 5.92 1995 6.01 1996 6.1 1997 6.19 1998 6.28 1999 6.38 2000 6.48 2001 6.57 2002 6.67 2003 6.78 2004 6.88 2005 6.99 2006 7.07 2007 7.16 2008 7.24 2009 7.33 2010 7.42 2011 7.45 2012 7.48 2013 7.51 2014 7.54 2015 7.57 2016 7.6