1. Department of Economics, University of Alaska Anchorage, Anchorage, Alaska, USA;
2. Department of Economics, University of Wyoming, Laramie, Wyoming, USA
3. Institute of Social and Economic Research, University of Alaska Anchorage, Anchorage, Alaska, USA
4. Queens’ College, University of Cambridge, Cambridge, United Kingdom
5. Department of Economics, University of Sydney, Sydney, Australia
6. Centre for Applied Macroeconomic Analysis, Australian National University, Canberra, Australia