NEW YORK (AP) -- New hope for the economy just gave the stock market its best July in 20 years. The Dow surged 725 points or 8.6% for the month, with most of the gains arriving in bursts in the final 15 days. The extraordinary run shaped July into the best month for the blue chips since October 2002 and the best July since 1989 (see chart above). The Dow has risen four of the past five months.