Year % of new cases 2000 72 2001 70 2002 78 2003 80 2004 91 2005 85 2006 85 2007 85 2008 81 2009 80 2010 82 2011 78 2012 82 2013 85 2014 79 2015 73 2016 78 2017 82 2018 79 2019 86 2020 90 2021 88