Year Cases per 100,000 1990 55.57 1991 58.94 1992 62.58 1993 66.49 1994 70.69 1995 75.22 1996 78 1997 80.91 1998 83.95 1999 87.12 2000 90.45 2001 98.18 2002 106.71 2003 116.12 2004 126.49 2005 137.96 2006 142.63 2007 147.46 2008 152.49 2009 157.71 2010 163.13 2011 163.16 2012 163.2 2013 163.25 2014 163.31 2015 163.38 2016 163.55