Year Cases per 100,000 1990 29.56 1991 30.38 1992 31.25 1993 32.16 1994 33.1 1995 34.09 1996 34.92 1997 35.78 1998 36.68 1999 37.61 2000 38.65 2001 38.99 2002 39.35 2003 39.71 2004 40.09 2005 40.48 2006 40.68 2007 40.87 2008 41.08 2009 41.3 2010 41.53 2011 41.68 2012 41.84 2013 42 2014 42.18 2015 42.37 2016 42.57