Year Cases per 100,000 1990 35.74 1991 36.64 1992 37.6 1993 38.63 1994 39.72 1995 40.92 1996 42.19 1997 43.52 1998 44.93 1999 46.4 2000 47.95 2001 49.48 2002 51.09 2003 52.78 2004 54.56 2005 56.44 2006 57.39 2007 58.38 2008 59.41 2009 60.48 2010 61.61 2011 61.13 2012 60.68 2013 60.25 2014 59.84 2015 59.45 2016 59.09