Wheat Data
This data product contains statistics on wheat - including the five classes of wheat: hard red winter, hard red spring, soft red winter, white, and durum - and rye. Includes data published in the monthly Wheat Outlook and previously annual Wheat Yearbook. Data are monthly, quarterly, and/or annual depending upon the data series.
http://www.ers.usda.gov/Data/Wheat/#2010-6-21