Year Cases per 100,000 1990 32.3 1991 32.38 1992 32.46 1993 32.54 1994 32.62 1995 32.72 1996 32.95 1997 33.19 1998 33.44 1999 33.69 2000 33.95 2001 34.34 2002 34.75 2003 35.16 2004 35.58 2005 36.01 2006 36.34 2007 36.68 2008 37.02 2009 37.37 2010 37.72 2011 38.02 2012 38.34 2013 38.65 2014 38.97 2015 39.29 2016 39.61