Source: Board of Governors of the Federal Reserve System (US)  

Release: Summary Measures of the Foreign Exchange Value of the Dollar  

Units:  Index Mar 1973=100, Not Seasonally Adjusted

Frequency:  Monthly

Averages of daily figures. Series is price adjusted. 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.

Broad currency index includes the Euro Area, Canada, Japan, Mexico, China, United Kingdom, Taiwan, Korea, Singapore, Hong Kong, Malaysia, Brazil, Switzerland, Thailand, Philippines, Australia, Indonesia, India, Israel, Saudi Arabia, Russia, Sweden, Argentina, Venezuela, Chile and Colombia.

For more information about trade-weighted indexes see the Board of Governors methodology.