Year Cases per 100,000 1990 30.35 1991 32.17 1992 34.12 1993 36.2 1994 38.42 1995 40.8 1996 43.93 1997 47.34 1998 51.02 1999 55.01 2000 59.35 2001 59.78 2002 60.26 2003 60.75 2004 61.26 2005 61.82 2006 61.64 2007 61.45 2008 61.31 2009 61.19 2010 61.12 2011 61.61 2012 62.16 2013 62.72 2014 63.29 2015 63.89 2016 64.53