"Figure 1: The improvements outlined in the article revise the growth of quality-adjusted education output down","" "Comparing the impact of the primary school attainment and disadvantage attainment gap index on education final output index, UK, 1997 to 2018","" "","" "Notes","" "Unit","Index, 1997=100" "","" "Period","Current method","Proposed method introducing primary school attainment and the KS2 disadvantage attainment gap" "1997","100","100" "1998","102","102.1" "1999","104.4","104.4" "2000","106.5","106" "2001","109.2","108.3" "2002","112.3","111" "2003","115.2","113.4" "2004","118.6","116" "2005","120.3","117" "2006","120.8","117" "2007","122.5","117.8" "2008","124.2","118.6" "2009","126.4","120.1" "2010","127.7","121.6" "2011","130.2","124.8" "2012","132.8","128" "2013","133.7","129.4" "2014","135.5","131.4" "2015","136.8","133.2" "2016","138.1","134.9" "2017","139.3","136.6" "2018","140.7","138.3"