Year % of people at risk 2005 64.3 2006 45.6 2007 39.7 2008 27.3 2009 24.4 2010 26.9 2011 24.8 2012 22.5 2013 24.3 2014 22.9 2015 24.7 2016 17.5 2017 19 2018 19.3 2019 19.8 2020 16.8 2021 16.1 2022 17.3