1. Consortium on Compensating Income Variation, Department of Economics, University of Iceland, 102 Reykjavík, Iceland;
2. Erasmus School of Economics, 3062 PA Rotterdam, Netherlands;
3. Department of Economics, University of Alicante, 03690 San Vicente del Raspeig, Alicante, Spain;
4. University of Chicago, Chicago, Illinois 60637;
5. School of Financial and Economic Management, Hanze University of Applied Sciences, 9747 AS Groningen, Netherlands