Year % of people at risk 2003 5.6 2004 13.8 2005 9.8 2006 8.5 2007 10.4 2008 8.9 2009 4.4 2010 4.5 2011 3.6 2012 3.4 2013 3.3 2014 3 2015 3.3 2016 3 2017 2.9 2018 2.8 2019 2.6 2020 2.6 2021 2.4 2022 2.2