The United Nations 2011 World Drug Report has just been released. Here's the link to the main announcement page which contains links to the full report and all subscetions too, and here's the PDF subsection on coca/cocaine production (the one that's LatAm-centric).
And congrats to Peru! According to UN figures (see page 99 of that 2nd link), Peru is now neck and neck with Colombia as the world's biggest coca leaf grower! ¡Viva Investment Grade Carajo!