Crude slumped almost 50 percent las

Crude slumped almost 50 percent last year, the most since the 2008, as OPEC resisted calls to cut output even as the U.S. pumped at the fastest rate in more than three decades. A government report earlier in the day showed that U.S. crude inventories increased to a six-month high as production and imports climbed.

Natural gas for February delivery rose to $3.233 per million British thermal units in New York in its steepest one-day gain since Feb. 19. A blast of arctic weather predicted to swoop into the U.S. signaled stronger demand after a mild December.

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原油下跌近百分之50，去年以来，2008个最，欧佩克削减产量，甚至拒绝为美国最快的速度能超过三年。一份政府报告当天早些时候表明，美国原油库存增加到了6个月的高生产和进口增长

。二月交货的天然气涨到了3美元。233每百万英热单位在纽约的最大单日涨幅自二月十九日。一股严寒的天气预测，一举成为美国标志的强劲需求温和的十二月之后。