Year Cases per 100,000 1990 31.78 1991 32.95 1992 34.19 1993 35.48 1994 36.84 1995 38.28 1996 39.21 1997 40.19 1998 41.2 1999 42.24 2000 43.34 2001 44.26 2002 45.23 2003 46.22 2004 47.24 2005 48.32 2006 49.18 2007 50.05 2008 50.97 2009 51.92 2010 52.93 2011 54.04 2012 55.22 2013 56.43 2014 57.68 2015 58.97 2016 60.34