Oil prices reached a fresh one-year high near $76 a barrel Thursday in Asia on a weaker U.S. dollar and growing investor optimism about an economic recovery. Benchmark crude for November delivery was up 72 cents to $75.90, the highest since October 2008, by midday Singapore time in electronic trading on the New York Mercantile Exchange. The contract added $1.03 to settle at $75.18 on Wednesday. Oil investors have fed off rising stock markets and a falling dollar this week to break out of a $65 to $75 trading range that has held since May.