An FAO/WFP Crop and Food Security Assessment Mission (CFSAM) visited the DPRK from 2012-9-24 to 2012-10-18 (25 days). They assessed the 2012 main crop harvest; forecasted the 2013 production of winter and spring crop; estimated cereal import requirements for the 2012/13 marketing year (November/October); assessed the household food-security situation and estimated food assistance needs.
Read the full report here (PDF).
It is full of data/statistics and well worth reading. You can find even more information on my DPRK Economic Statistics Page.
Here is media coverage of the report: Associated Press 1, Associated Press 2, Yonhap 1, Yonhap 2.