I would also like to mention countries such as Argentina, Brazil, Canada and South Africa  3  BIS Review 114/1999  which have issued international bonds denominated in euro in order to diversify their foreign debt to the benefit of the European single currency.
The international use of the euro by private operators can primarily occur within the framework of transactions or for investment and financing operations. At the beginning of the 90s one estimated that about 50% of the exports of goods and services was invoiced in dollars, one third in one of the currencies that participate in the euro and only 5% in yen.