Year % of people at risk 2003 65.1 2004 64.8 2005 64.7 2006 63.4 2007 61.9 2008 58.5 2009 58.9 2010 59.6 2011 59.2 2012 56.9 2013 54.4 2014 53.9 2015 55.7 2016 55.4 2017 54.9 2018 54.1 2019 54 2020 55 2021 56.9 2022 56.8