Year % of people at risk 2003 92.5 2004 88.3 2005 88.8 2006 86.3 2007 88.5 2008 88.1 2009 89.2 2010 82.3 2011 76.7 2012 71.1 2013 54.4 2014 49.5 2015 48.9 2016 50 2017 52.6 2018 45 2020 38.7 2021 47 2022 46.6