U.S. retailers' sales at stores open at least a year rose about 6% in August as shoppers scooped up fall fashions and back-to-school items such as knapsacks and notebooks, Bank of Tokyo-Mitsubishi reported Wednesday.

The estimate for same-store sales indicates a cooling trend, down from July's 6.9% increase and June's 7.4% gain. But this August's sales gains were far ahead of August 1998, when they rose 4.4%.

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