Year Cases per 100,000 1990 25.14 1991 26.07 1992 27.07 1993 28.14 1994 29.28 1995 30.51 1996 31.65 1997 32.86 1998 34.13 1999 35.48 2000 36.91 2001 37.66 2002 38.44 2003 39.24 2004 40.07 2005 40.94 2006 41.71 2007 42.5 2008 43.31 2009 44.15 2010 45.02 2011 45.17 2012 45.33 2013 45.49 2014 45.65 2015 45.81 2016 45.99