Year Cases per 100,000 1990 27.4 1991 27.57 1992 27.77 1993 27.97 1994 28.17 1995 28.41 1996 29.14 1997 29.93 1998 30.76 1999 31.61 2000 32.54 2001 33.29 2002 34.1 2003 34.94 2004 35.81 2005 36.73 2006 37.67 2007 38.62 2008 39.63 2009 40.67 2010 41.76 2011 42.28 2012 42.84 2013 43.41 2014 43.99 2015 44.58 2016 45.21