Year Cases per 100,000 1990 39.76 1991 40.36 1992 40.98 1993 41.61 1994 42.25 1995 42.92 1996 43.58 1997 44.27 1998 44.97 1999 45.68 2000 46.41 2001 47.7 2002 49.03 2003 50.4 2004 51.82 2005 53.3 2006 54.85 2007 56.44 2008 58.09 2009 59.79 2010 61.56 2011 62.69 2012 63.85 2013 65.03 2014 66.24 2015 67.48 2016 68.75