Year	% of people at risk
2003	6.5
2004	5.8
2005	4.2
2006	5.7
2007	3.5
2008	2.4
2009	2.5
2010	2.4
2011	2.5
2012	2.6
2013	3.1
2014	2.5
2015	2.1
2016	1.4
2017	1.6
2018	1.1
2019	0.8
2020	0.9
2021	0.8
2022	0.7