Year Gini 1996 37.1 1997 40.7 1998 41.3 1999 40.1 2000 40.5 2001 39.6 2002 37.3 2003 36.7 2004 36.3 2005 37.3 2006 36.9 2007 38.3 2008 38.2 2009 38.1 2010 40.1 2011 39.5 2012 38.8 2013 38.4 2014 37.3 2015 36.4 2016 36.5