Reserve currency economy, the German Deutsche Mark gained the status of the second most important reserve currency after the US dollar. When the euro was introduced on 1 January 1999, replacing the Mark, French franc and ten other European currencies, it inherited the status of a major reserve currency from the Mark. Since then, its contribution to official reserves has risen continually as banks seek to diversify their reserves, and trade in the eurozone continues to expand. Former U.S. Federal Reserve Chairman Alan Greenspan said in September 2007 that the euro could replace the U.S. dollar as the world's primary reserve currency.
Euro Currency Index the index to fall from 29 June 2010 to 175.31 points. In the following months, the European Stability Mechanism was developed, which provides for mutual assistance in case of emergency to avoid the bankruptcy of the Member States. By May 4, 2011, the index rose to a level of 200.20 points. With the intensification of the sovereign debt crisis in the Euro zone, the Euro Currency Index fell 24 July 2012 with 168.38 points, its lowest level since March 29, 2006. Compared to the all-time high of 29 December 2008, this represents a decrease of 19.7 percent . The below