Year	% of people at risk
2003	1.4
2004	1.4
2005	1.3
2006	1.1
2007	0.8
2008	0.8
2009	0.5
2010	0.6
2011	0.8
2012	0.9
2013	0.9
2014	0.8
2015	0.6
2016	0.6
2017	0.4
2018	0.3
2019	0.2
2020	0.5
2021	0.7
2022	0.7