1. Munich Research Institute for the Economics of Aging (MEA) at the Max Planck Institute for Social Law and Social Policy, Amalienstr. 33, 80799 Munich, Germany (e-mail: )
2. MEA at the Max Planck Institute for Social Law and Social Policy, Amalienstr. 33, 80799 Munich, Germany (e-mail: )
3. CMR—Center for Macroeconomic Research, University of Cologne, Albertus-Magnus-Platz, 50923 Köln, Germany (e-mail: )