Year % of new cases 2001 67 2002 70 2003 71 2004 71 2005 71 2006 74 2007 76 2008 77 2009 81 2010 81 2011 79 2012 80 2013 82 2014 81 2015 79 2016 81 2017 81 2018 80 2019 78 2020 78 2021 86