Year % of people at risk 2003 87.7 2004 85.5 2005 78.9 2006 63.9 2007 65.8 2008 73.5 2009 77.1 2010 68.6 2011 57.4 2012 52.7 2013 50.6 2014 54.8 2015 53 2016 45.7 2017 44 2018 43.6 2019 45.9