According to Robert Gilpin in Global Political Economy: Understanding the International Economic Order (2001): "Somewhere between 40 and 60 percent of international financial transactions are denominated in dollars.
Menurut Robert Gilpin dalam Ekonomi Politik Global: Memahami Tatanan Ekonomi Internasional (2001): "Antara 40 sampai 60 persen dari transaksi keuangan internasional dalam mata uang dolar.