First Author:   Youssef Ghallada Center for Research in Economics (CEREC), UCLouvain - Saint-Louis - Bruxelles youssef.ghallada@usaintlouis.be   43 Boulevard du Jardin Botanique Brussels, 1000, Belgium       Second Author: Alexandre Girard Center for Research in Economics (CEREC), UCLouvain - Saint-Louis - Bruxelles alexandre.girard@usaintlouis.be   43 Boulevard du Jardin Botanique Brussels, 1000, Belgium       Third Author: Kim Oosterlinck Centre Emile Bernheim (CEB), SBS - E.M., Université Libre de Bruxelles kim.oosterlinck@ulb.be   50 Avenue F.D. Roosevelt Brussels, 1050, Belgium