Year	% of people at risk
2003	5.1
2004	5.9
2005	6.5
2006	4.6
2007	4.2
2008	4.3
2009	4.9
2010	4.5
2011	3.6
2012	3.5
2013	2.7
2014	2.5
2015	2.3
2016	1.9
2017	1.5
2018	1.6
2019	2.7
2020	2.1
2021	1.8
2022	1.7