[2020 Economics Nobel Prize] At least one winner to be American

Created by Cato on 2019-09-27; known on 2020-10-20; judged right by Cato on 2020-11-02.

• Cato estimated 65% on 2019-09-27
• pranomostro estimated 70% on 2019-10-14
• Cato   judged this prediction right on 2020-11-02.