Oil prices increased after a week of falling crude prices on optimism that US President Barak ObamaÔÇÖs stimulus plan will revive the economy and demand. ┬á "It looks like a bounce on stimulus hopes," said Tom Bentz at BNP Paribas Commodity Futures. ┬á US crude for March delivery rose $3.53 to $37.51 a barrel. Brent oil added $1.22 to $44.81 a barrel.┬á The House of Representatives has approved President Obama's revised emergency plan, including tax cuts and spending aimed at rescuing the US economy, and the Senate is expected to approve it at a later date.