Year Cases per 100,000 1990 30.86 1991 31.7 1992 32.61 1993 33.56 1994 34.57 1995 35.65 1996 36.78 1997 37.98 1998 39.23 1999 40.55 2000 41.93 2001 42.56 2002 43.22 2003 43.89 2004 44.58 2005 45.3 2006 46.73 2007 48.21 2008 49.78 2009 51.42 2010 53.14 2011 54.33 2012 55.56 2013 56.83 2014 58.13 2015 59.48 2016 60.88