Euro Currency Index summer of 2007, the index began to decline. On 6 February 2009 a value of 187.84 points was determined. In the following eight months, the European single currency rebounded from the lows. On 13 October 2009, the index rose by 208.45 points, near its historical high point. A financial crisis in several member states of the Euro zone in 2010 led to the outbreak of the Euro crisis. Particularly affected is Greece (see Greek government-debt crisis from 2010), but also other countries such as Ireland, Spain, Italy and Portugal. The weakness of the Euro against almost all global currencies caused
World currency unit have adopted the name "World Currency Unit". The Wocu (contraction of World Currency Unit) is a standardized basket of currencies — the national currencies of the 20 largest national economies measured by GDP, established in 2008. The basket is reweighed semi-annually according to the relative growth of the economies, whereby constituent currencies are replaced by other currencies should the size of the GDP be overtaken by that of another national economy. Conceived as an apolitical and global alternative to the ECU, it is used as a reference currency for global investors and companies seeking to mitigate bilateral exchange rate volatility.