In November 2010, the IMF determined that the Chinese yuan met the export requirement but failed to meet the "freely usable" requirement and thus was not included in the XDR basket taking effect on January 1, 2011. In November 2015, the IMF announced that the Chinese yuan now met the "freely usable" requirement and would be included in the next basket definition, changing its size back to five currencies. The effective date of the re-evaluation was postponed to October 1, 2016, in order to "allow users sufficient lead time to adjust".
