Net flows on external debt are disbursements on long-term external debt and IMF purchases minus principal repayments on long-term external debt and IMF repurchases up to 1984. Beginning in 1985 this line includes the change in stock of short-term debt (including interest arrears for long-term debt). Thus, if the change in stock is positive, a disbursement is assumed to have taken place; if negative, a repayment is assumed to have taken place. Long-term external debt is defined as debt that has an original or extended maturity of more than one year and that is owed to nonresidents by residents of an economy and repayable in foreign currency, goods, or services. Data are in current U.S. dollars.