Year % of people at risk 2004 54 2005 54.9 2006 57 2007 56.5 2008 55.9 2009 49.9 2010 55.1 2011 54.7 2012 53.9 2013 53.9 2014 47.2 2015 45.8 2016 44.2 2017 50.2 2018 52 2019 52.9 2020 53.4 2021 51.3 2022 50