Year % of new cases 2000 68 2001 71 2002 74 2003 75 2004 71 2005 74 2006 74 2007 74 2008 74 2009 73 2010 72 2011 73 2012 74 2013 75 2014 74 2015 75 2016 76 2017 75 2018 73 2019 73 2020 74 2021 73