Year	% of people at risk
2003	0.4
2004	0.6
2005	0.4
2006	0.5
2007	0.5
2008	0.5
2009	0.6
2010	0.8
2011	0.9
2012	1.1
2013	1.4
2014	1.5
2015	1.3
2016	1.1
2017	0.8
2018	0.8
2019	0.7
2020	0.9
2021	0.7
2022	0.7