Year Cases per 100,000 1990 24.93 1991 26.37 1992 27.91 1993 29.55 1994 31.31 1995 33.19 1996 34.83 1997 36.58 1998 38.42 1999 40.38 2000 42.45 2001 44.11 2002 45.84 2003 47.67 2004 49.58 2005 51.59 2006 52.95 2007 54.35 2008 55.79 2009 57.28 2010 58.82 2011 59.35 2012 59.89 2013 60.44 2014 61 2015 61.57 2016 62.16