Below is a link to the WTO documentation providing information on Iraq's accession info., as well as their ranking and trading info., etc. Note: the document was posted on WTO with a date of October 2010. I have emailed the WTO to find out an approximation of when Iraq applied for accession and what the current status of the application may be. I will re-post when/if I receive the verification of that info.
http://stat.wto.org/CountryProfile/WSDBCountryPFView.aspx?Language=E&Country=IQ