1. Ifo Institute – Leibniz Institute for Economic Research, Center for International Economics, University of Munich, Poschingerstr. 5, 81679 München, Germany; CESifo, Poschingerstr. 5, 81679 München, Germany
2. Ifo Institute – Leibniz Institute for Economic Research at the University of Munich, Ludwig-Maximilians-University Munich; CESifo, Poschingerstr. 5, 81679 München, Germany ; GEP, Sir Clive Granger Building, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
3. Ifo Institute – Leibniz Institute for Economic Research at the University of Munich, Poschingerstr. 5, 81679 Munich, Germany; CESifo, Poschingerstr. 5, 81679 München, Germany