Year % of people at risk 2003 39.1 2004 32.7 2005 25.9 2006 18.3 2007 10 2008 6.7 2009 9.3 2010 7.2 2011 4.4 2012 3.3 2013 2.6 2014 3.7 2015 9.7 2016 8.3 2017 7.2 2018 5.5 2019 4.2 2020 3.3 2021 2.6 2022 4.4