"Figure 4: Change in Gini coefficient, S80 and S20 ratio, P90 and P10 ratio and Palma ratio for equivalised disposable income, all households, 1977 to 2015/16","" "UK","" "","" "Notes","1. Indices are calculated relative to 1977 values. 2. 1994/95 represents the financial year ending 1995, and similarly through to 2015/16, which represents the financial year ending 2016. 3. (p) indicates results are provisional." "Unit","Index 1997=100" "","" "Year","Gini Coefficient","S80 and S20 ratio","P90 and P10 ratio","Palma ratio" "1977","100.0","100.0","100.0","100.0" "1978","97.8","97.1","97.1","96.4" "1979","100.7","101.6","100.0","99.8" "1980","105.1","108.2","105.9","107.0" "1981","106.6","107.1","102.9","109.7" "1982","105.1","104.7","100.0","107.8" "1983","108.1","109.1","105.9","112.0" "1984","104.4","103.3","102.9","106.7" "1985","111.8","114.5","111.8","117.4" "1986","116.2","120.2","111.8","127.3" "1987","122.1","131.7","123.5","137.4" "1988","129.0","147.5","135.3","151.6" "1989","126.5","145.0","138.2","144.5" "1990","135.3","163.2","147.1","165.4" "1991","130.9","155.2","147.1","154.4" "1992","127.6","147.1","138.2","146.9" "1993","127.9","145.9","135.3","149.1" "1994/95","124.3","138.9","129.4","141.0" "1995/96","121.3","135.0","126.5","134.6" "1996/97","126.5","144.6","132.4","145.4" "1997/98","126.8","146.5","135.3","146.0" "1998/99","130.1","153.5","138.2","154.0" "1999/00","131.6","158.3","138.2","156.0" "2000/01","128.7","151.4","138.2","150.3" "2001/02","133.1","159.9","141.2","160.7" "2002/03","124.3","141.8","129.4","139.9" "2003/04","125.0","142.3","123.5","142.9" "2004/05","120.6","134.6","123.5","134.1" "2005/06","124.6","141.1","129.4","141.5" "2006/07","127.6","148.0","132.4","147.6" "2007/08","125.7","148.5","135.3","142.7" "2008/09","126.1","144.9","129.4","143.9" "2009/10","122.1","137.9","123.5","136.4" "2010/11","123.9","137.9","123.5","140.3" "2011/12","118.8","129.4","117.6","130.6" "2012/13","122.4","136.5","120.6","138.0" "2013/14","119.1","135.1","123.5","129.4" "2014/15","119.9","134.5","123.5","129.3" "2015/16(p)","118.8","130.1","120.6","128.3"