South Korea's inflation is likely to stay far above the central bank's target this year due to high oil prices and a weak won, a bank official said Wednesday.The Bank of Korea's inflation target range is 2.5 to 3.5 percent for this year. But annual inflation has been above 3.5 percent since December. In April, inflation gained 4.1 percent, the highest level in almost four years."This year, consumer prices are expected to remain far above the Bank of Korea's upper limit of 3.5 percent," Lee Jong-Geon, head of the bank's survey team, told Yonhap news agency.