Year	% of people at risk
2003	1.9
2004	1.3
2005	3.3
2006	0.7
2007	0.7
2008	0.6
2009	0.6
2010	1.3
2011	1.3
2012	2
2013	2.3
2014	1.8
2015	1.4
2016	1.2
2017	1.1
2018	0.7
2019	0.7
2020	0.6
2021	0.5
2022	0.4