Year % of people at risk 2003 23.4 2004 19.3 2005 17.4 2006 14.6 2007 13.1 2008 10.8 2009 10.6 2010 9.2 2011 7.4 2012 6.5 2013 6 2014 7 2015 7 2016 7.3 2017 6.1 2018 6.8 2019 8.8 2020 9.9 2021 8.6 2022 7.7