Operating profits (million USD) and profit margin of Reed-Elsevier as a whole (A) and of its Scientific, Technical & Medical division (B), 1991–2013.

<p>Compilation by the authors based on the annual reports of Reed-Elsevier. (<a href="http://www.reedelsevier.com/investorcentre/pages/home.aspx" target="_blank">http://www.reedelsevier.com/investorcentre/pages/home.aspx</a>) Numbers for the Scientific, Technical & Medical division were only available in GBP; conversion to USD was performed using historical conversion rates from <a href="http://www.oanda.com" target="_blank">http://www.oanda.com</a>.</p>