Year	% of people at risk
2003	80.2
2004	79.5
2005	79.2
2006	77.5
2007	76.6
2008	76.2
2009	75.9
2010	75.8
2011	73.8
2012	71.9
2013	71.3
2014	71.6
2015	70.1
2016	70.1
2017	70.4