Year	% of people at risk
2003	29.6
2004	28.6
2005	26.7
2006	24.3
2007	21.2
2008	20.9
2009	20.8
2010	19.4
2011	16.8
2012	17.2
2013	15.3
2014	14.6
2015	13.1
2016	13.2
2017	12.2
2018	11.3
2019	9.2
2020	9.4
2021	9.3
2022	8.3