"Figure 12: Gini coefficients for different income measures, 1977 to financial year ending 2016","" "UK","" "","" "Notes","1. Equivalised using the modified-OECD scale. 2. An improved process for calculating the Gini Coefficient has been implemented which has resulted in a change to the levels of rounding applied. Although not significant, there are minor differences to previously published Gini estimates." "Unit","Percentage" "","" "","Original","Gross","Disposable","Post Tax" "1977","42.9","30.0","27.3","29.4" "1978","42.9","29.8","26.6","28.1" "1979","43.6","30.1","27.4","29.1" "1980","44.5","31.2","28.6","30.9" "1981","45.9","31.8","29.0","31.4" "1982","47.0","31.5","28.6","31.3" "1983","48.5","32.7","29.4","32.2" "1984","48.6","31.7","28.4","30.8" "1985","49.5","33.6","30.4","33.3" "1986","50.5","34.5","31.6","35.3" "1987","51.1","36.1","33.2","36.7" "1988","50.9","37.1","35.1","38.8" "1989","49.7","36.3","34.4","37.8" "1990","51.4","38.6","36.8","40.6" "1991","51.2","37.8","35.6","39.4" "1992","51.7","37.3","34.7","38.4" "1993","53.3","37.8","34.8","38.7" "1994/95","52.8","37.0","33.8","37.5" "1995/96","52.0","36.5","33.0","36.9" "1996/97","52.6","37.6","34.4","38.2" "1997/98","52.6","37.8","34.5","38.3" "1998/99","52.7","38.6","35.4","39.3" "1999/00","52.6","38.7","35.8","40.0" "2000/01","51.3","37.9","35.0","39.2" "2001/02","52.6","39.3","36.3","40.6" "2002/03","51.1","37.4","33.8","37.7" "2003/04","51.7","37.6","34.0","38.1" "2004/05","50.7","36.4","32.8","36.6" "2005/06","51.8","37.5","33.9","37.6" "2006/07","51.5","38.0","34.7","38.8" "2007/08","51.6","37.6","34.2","38.0" "2008/09","52.1","37.6","34.2","37.7" "2009/10","52.0","36.9","33.3","36.8" "2010/11","52.2","36.9","33.7","37.7" "2011/12","51.7","36.1","32.3","36.3" "2012/13","52.2","36.9","33.3","37.2" "2013/14","50.3","35.9","32.4","36.3" "2014/15","50.0","35.8","32.6","36.4" "2015/16","49.3","35.0","31.6","35.4"