摘要:Between March 31 and May 31, the price of crude oil rose from approximately $34 to $41 per barrel, wholesale gasoline from $1.04 to $1.40 per gallon and natural gas from $5.50 to $6.50 per thousand cubic feet. Prices for crude oil and gasoline contracts on the New York Mercantile Exchange set records in late May and early June, if unadjusted for inflation. Even more remarkable, this run-up was achieved with no help from sweltering summer heat or winter blizzards. It occurred in the spring shoulder months, normally a time of slack demand.