Year % of people at risk 2003 51.4 2004 50.1 2005 50.1 2006 41.2 2007 41.4 2008 39.9 2009 37.4 2010 36.5 2011 32.6 2012 28.6 2013 27.5 2014 27 2015 29.5 2016 28 2017 24.4 2018 29.7 2019 30 2020 25.2 2021 27.1 2022 26.6