U.S. soybean export sales hit a marketing year low during the week ending February 15th. The USDA says soybean sales were sharply below the previous week and the four-week average, following a big cancelation by unknown destinations. Rice also hit a marketing year low and sales of all other major commodities were down on the week. Export demand is driven by several factors including the value of the dollar relative to other currencies and seasonal changes in supply.