Year	% of people at risk
2003	1.1
2004	0.4
2005	0.8
2006	0.7
2007	0.6
2008	0.7
2009	0.9
2010	0.9
2011	0.8
2012	0.9
2013	0.7
2014	0.9
2015	0.6
2016	0.5
2017	0.4
2018	0.3
2019	0.2
2020	0.3
2021	0.2
2022	0.1