Year Cases per 100,000 1990 33.58 1991 33.58 1992 33.59 1993 33.6 1994 33.61 1995 33.63 1996 34.09 1997 34.57 1998 35.06 1999 35.56 2000 36.08 2001 37.06 2002 38.09 2003 39.15 2004 40.25 2005 41.4 2006 42.25 2007 43.1 2008 43.99 2009 44.91 2010 45.86 2011 46.07 2012 46.31 2013 46.55 2014 46.79 2015 47.04 2016 47.33