Year	% of people at risk
2003	44.2
2004	40.2
2005	38.2
2006	39.8
2007	39.1
2008	35.7
2009	33.6
2010	33.3
2011	33.9
2012	27.7
2013	27.1
2014	29.4
2015	25.5
2016	25
2017	25.3
2018	21.9
2019	21.3
2020	20
2021	18.4
2022	21.1