Value is U.S. dollars.
A weighted average of the foreign exchange value of the U.S. dollar against the currencies of a broad group of major U.S. trading partners. A weighted average of the foreign exchange value of the U.S. dollar against a subset of the broad index currencies that circulate widely outside the country of issue. A weighted average of the foreign exchange value of the U.S. dollar against a subset of the broad index currencies that do not circulate widely outside the country of issue.