Year % of people at risk 2003 14.8 2004 10.2 2005 8.2 2006 7 2007 5.9 2008 4.3 2009 7 2010 6.7 2011 3.2 2012 3.1 2013 3.5 2014 6.6 2015 4.7 2016 5.3 2017 4.7 2018 2.5 2019 2.2 2020 2.2 2021 3.8 2022 1.8