Zusammengestellt nach Angaben in Dennis O. Flynn / Arturo Giráldez: Cycles of Silver: Global Economic Unity through the Mid-18th Century, in: Markus A. Denzel (Hg.): From Commercial Communication to Commercial Integration: Middle Ages to 19th Century, Stuttgart 2004, S. 83; Jan de Vries, Connecting Europe and Asia: A Quantitative Analysis of the Cape-Route Trade: 1497–1797, in: Dennis O. Flynn u.a. (Hg.): Global Connections and Monetary History: 1470–1800, Aldershot 2003, S. 94f.