Oil prices on track for biggest yearly gain since 2009

By Sabina Zawadzki LONDON (Reuters) - Oil prices are on track for their biggest annual gain since 2009 after the OPEC grouping and other major producers agreed to cut crude output to reduce a global supply overhang that has depressed prices for two years. U.S. benchmark West Texas Intermediate (WTI) crude futures were up 6 cents at $53.83 a barrel by 1100 GMT on Friday, while Brent front-month March crude stayed flat at $56.85. The fall in prices due to oversupply, in part thanks to the U.S. sha