Year % of people at risk 2003 27 2004 31.9 2005 31.9 2006 26.7 2007 31.7 2008 37.4 2009 36.1 2010 26.2 2011 25.7 2012 24.9 2013 24.7 2014 24.8 2015 24.4 2016 22.7 2017 19.6 2018 18.8 2019 18.2 2020 21.8 2021 21.7 2022 28