Year % of people at risk 2003 62.9 2004 61.8 2005 60.1 2006 58.9 2007 59.1 2008 58 2009 57.4 2010 57.9 2011 57.3 2014 55.4 2015 52.5 2016 52.8 2017 52 2018 50.7 2019 50.2 2020 51.4 2021 50.6 2022 50.5