Year Cases per 100,000 1990 52.79 1991 53.79 1992 54.81 1993 55.86 1994 56.93 1995 58.03 1996 58.56 1997 59.1 1998 59.65 1999 60.21 2000 60.78 2001 60.91 2002 61.06 2003 61.2 2004 61.35 2005 61.51 2006 61.48 2007 61.45 2008 61.42 2009 61.4 2010 61.38 2011 60.91 2012 60.44 2013 59.99 2014 59.54 2015 59.1 2016 58.67