Year % of people at risk 2005 38.8 2006 39.1 2007 36.9 2008 33 2009 31.8 2010 32.4 2011 30.8 2012 29.7 2013 27.6 2014 26.8 2015 27.9 2016 27.6 2017 25.2 2018 24.7 2019 24.3 2020 27.8 2021 25.9 2022 25.1