Year Cases per 100,000 1990 26.04 1991 26.58 1992 27.15 1993 27.74 1994 28.34 1995 28.97 1996 30.13 1997 31.35 1998 32.65 1999 34.01 2000 35.45 2001 37.04 2002 38.73 2003 40.51 2004 42.39 2005 44.4 2006 45.89 2007 47.42 2008 49.04 2009 50.72 2010 52.48 2011 53.54 2012 54.64 2013 55.77 2014 56.92 2015 58.11 2016 59.33