Year Cases per 100,000 1990 26.43 1991 26.6 1992 26.79 1993 26.98 1994 27.17 1995 27.38 1996 27.44 1997 27.53 1998 27.63 1999 27.75 2000 27.89 2001 28.44 2002 29.01 2003 29.6 2004 30.21 2005 30.85 2006 31.54 2007 32.24 2008 32.98 2009 33.74 2010 34.53 2011 34.87 2012 35.21 2013 35.57 2014 35.92 2015 36.29 2016 36.67