Year Cases per 100,000 1990 86.97 1991 90.36 1992 93.93 1993 97.65 1994 101.54 1995 105.62 1996 104.95 1997 104.32 1998 103.69 1999 103.08 2000 102.51 2001 104.1 2002 105.78 2003 107.52 2004 109.33 2005 111.26 2006 111.63 2007 111.94 2008 112.33 2009 112.72 2010 113.18 2011 113.73 2012 114.35 2013 114.98 2014 115.61 2015 116.24 2016 116.94