First Author:   Sule Akkoyunlu Swiss Form for Migration and Population sule.akkoyunlu@gmail.com   University of Neuchâtel, Rue St-Honoré 2 Neuchâtel, 2000, Switzerland       Second Author: Frank R. Lichtenberg Columbia University frank.lichtenberg@columbia.edu   Columbia University, Graduate School of Business, 614 Uris Hall, 3022 Broadway New York, 10027, USA       Third Author: Boriss Siliverstovs KOF Swiss Economic Institute siliverstovs@kof.ethz.ch   KOF, ETHZ, Weinbergstrasse 35 , 8092, Switzerland       http:// Fourth Author: Peter Zweifel University of Zurich pzweifel@soi.uzh.ch   University of Zurich, Socioeconomic Institute, Hottingerstrasse. 10 Zurich, 8032, Switzerland       http://