Higher retail gasoline prices in the United States aren’t doing much yet to crimp demand, which is testing multi-year highs, a market reports find. Motor club AAA reported a national average retail price of $2.77 for a gallon of regular unleaded gasoline on Tuesday, up just a fraction from the previous day but about 6 percent, or 17 cents per gallon, more expensive than one month ago. Higher oil prices and stronger demand figures are leading to spikes in gasoline prices. Consumer data from the federal government last week show demand in April is already higher than during a typical summer travel season. Nationwide, 13 percent of […]