Year % of new cases 2000 71 2001 70 2002 73 2003 73 2004 71 2005 75 2006 73 2007 77 2008 77 2009 76 2010 73 2011 79 2012 81 2013 79 2014 81 2015 83 2016 82 2017 82 2018 82 2019 86 2020 86 2021 88