Year % of new cases 2000 80 2001 76 2002 80 2003 85 2004 89 2005 85 2006 86 2007 81 2008 86 2009 86 2010 86 2011 85 2012 84 2013 83 2014 87 2015 89 2016 88 2017 89 2018 92 2019 90 2020 91