Year % of new cases 2000 78 2001 63 2002 76 2003 71 2004 71 2005 96 2006 99 2007 89 2008 92 2009 85 2010 76 2011 69 2012 70 2013 73 2014 74 2015 78 2016 78 2017 75 2018 72 2019 70 2020 71 2021 70