Year % of people at risk 2004 63.6458892796665 2005 62.8361410435987 2006 61.2537572802208 2007 61.56959246742 2008 66.1764488881991 2009 61.3867929001758 2010 62.6449201134643 2011 63.3511483122683 2012 63.2321624183317 2013 60.1679748808105 2014 60.6468700731985 2015 59.5301189136078 2016 60.2511485302411 2017 61.0057820588401