USDA raised its estimate of U.S. corn exports in 2017/18 to 2.4 billion bushels in the July WASDE. This increase was based on the large volume of open unshipped sale plus the record pace of export shipments in March, April and May as well as the record corn exports for June expected in the yet-to-be-released Census Bureau data. In its comments, USDA observed that if its 2017/18 forecast is realized, it would be close to a record export performance. In fact, the record volume of U.S. exports during a corn marketing year (September-August) occurred in 2007/08 when they reached 2.44 billion bushels. Over the years, the annual volume has varied considerably based on a variety of factors affecting available U.S. supplies, competitor supplies an...