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The value of a SDR is based on a basket of key international currencies reviewed by IMF every five years. The weights assigned to each currency in the XDR basket are adjusted to take into account their current prominence in terms of international trade and national foreign exchange reserves. In the review conducted in November 2015, the IMF decided to add the Renminbi (Chinese yuan) to the basket, effective 1 October 2016. Since that date, the XDR basket has consisted of the following five currencies: U.S. dollar 41.73%, euro 30.93%, renminbi (Chinese yuan) 10.92%, Japanese yen 8.33%, British pound 8.09%.