Year % of new cases 2000 63 2001 56 2002 60 2003 68 2004 70 2005 73 2006 68 2007 72 2008 67 2009 64 2010 68 2011 73 2012 77 2013 75 2014 75 2015 75 2016 77 2017 72 2018 74 2019 82 2020 85 2021 88