WASHINGTON (MarketWatch) – Wholesale inventories in the U.S. rose 0.2% in August. Sales in the month also increased 0.2%, the government said Wednesday. The ratio of inventories to sales was unchanged at 1.36. That’s how many months it would take to sell all the inventory on hand. One year ago, the inventory-to-sales ratio was much lower at 1.28. An increase in inventories adds to gross domestic product. Wholesale inventories also rose 0.2% in July.