Year	% of people at risk
2003	1.1
2004	3.6
2005	2.2
2006	1.7
2007	1.3
2008	1
2009	0.8
2010	0.8
2011	0.8
2012	0.7
2013	0.7
2014	0.6
2015	0.4
2016	0.3
2017	0.1
2018	0.1
2019	0.1
2020	0.4
2021	0.4