Year % of new cases 2000 73 2001 64 2002 78 2003 68 2004 70 2005 71 2006 71 2008 70 2009 70 2010 75 2011 72 2012 69 2013 72 2014 74 2015 73 2016 75 2017 69 2018 73 2019 74 2020 70 2021 75