Should the rich be taxed more? : the fiscal inequality coefficient / John Hatgioannides (Cass Business School, City University of London), Marika Karanassou (Queen Mary, University of London and IZA), Hector Sala (Universitat Autònoma de Barcelona and IZA) ; IZA Institute of Labor Economics. Bonn, Germany : IZA Institute of Labor Economics, August 2017