The Ethiopian Birr (ETB) has been Ethiopia's official currency for many years, with the National Bank of Ethiopia regulating its issuance and circulation. Like many currencies, the Ethiopian Birr's value is subject to various economic factors and global market conditions, leading to fluctuations in its exchange rate against major international currencies. As of my last knowledge update in January 2022, the exchange rate was approximately 48.30 ETB to 1 USD. While the ETB is primarily used for domestic transactions, it may also be traded on international foreign exchange markets. Ethiopia has not adopted a foreign currency as its official tender, reaffirming the country's commitment to the Ethiopian Birr as its national currency. Please note that exchange rates can change over time, and it's advisable to verify the most current rates from reputable financial sources if needed for currency conversion or financial transactions.