Year % of new cases 2000 73 2001 72 2002 65 2003 72 2004 81 2005 88 2006 91 2007 91 2008 91 2009 90 2010 89 2011 90 2012 88 2013 86 2014 87 2015 87 2016 87 2017 86 2018 85 2019 83 2020 81 2021 80