Year Cases per 100,000 2000 76 2001 75 2002 70 2003 77 2004 60 2005 63 2006 72 2007 69 2008 65 2009 60 2010 56 2011 57 2012 54 2013 52 2014 50 2015 48 2016 47 2017 45 2018 38 2019 36 2020 25