Year Cases per 100,000 1990 53.65 1991 53.42 1992 54.29 1993 55.23 1994 56.2 1995 56.78 1996 57.71 1997 58.55 1998 59.24 1999 59.87 2000 60.74 2001 61.57 2002 62.46 2003 63.51 2004 64.49 2005 65.64 2006 66.45 2007 67.11 2008 67.62 2009 67.9 2010 67.84 2011 66.84 2012 66.05 2013 65.16 2014 63.58 2015 62.02 2016 60.68