Year	% of people at risk
2003	27.5
2004	27.2
2005	26.8
2006	25.6
2007	23.5
2008	21.3
2009	20.4
2010	22.4
2011	18.4
2012	18.2
2013	17.1
2014	16.8
2015	16.8
2016	18.9
2017	18.7
2018	19
2019	18.3
2020	13.9
2021	18.3
2022	24.1