Year Cases per 100,000 1990 33.13 1991 32.99 1992 32.87 1993 32.75 1994 32.64 1995 32.52 1996 32.81 1997 33.11 1998 33.42 1999 33.72 2000 34.04 2001 34.54 2002 35.06 2003 35.59 2004 36.13 2005 36.69 2006 37.11 2007 37.52 2008 37.95 2009 38.39 2010 38.83 2011 39.24 2012 39.66 2013 40.08 2014 40.51 2015 40.94 2016 41.38