Year Cases per 100,000 1990 71.83 1991 74.9 1992 78.16 1993 81.58 1994 85.17 1995 88.97 1996 93.89 1997 99.15 1998 104.76 1999 110.72 2000 117.08 2001 121.53 2002 126.2 2003 131.08 2004 136.17 2005 141.53 2006 145.57 2007 149.7 2008 154.02 2009 158.47 2010 163.12 2011 165.13 2012 167.22 2013 169.34 2014 171.49 2015 173.69 2016 175.95