Year % of new cases 2000 82 2001 81 2002 82 2003 84 2004 90 2005 91 2006 89 2007 89 2008 90 2009 89 2011 84 2013 85 2014 84 2015 82 2016 82 2017 82 2018 81 2019 81 2020 82 2021 81