Bank of China, the country´s fourth-largest asset-based lender, said on Wednesday that its last year's net profit rose more than twelve percent from a year earlier.The Bank of China said in a statement to the Shanghai Stock Exchange that its net profits rose 12.36 percent reaching 156.91 billion yuan ($25.64 billion), from 139.43 billion yuan in 2012.Its total asset value hit 13.87 trillion yuan at the end of 2013, up 9.41 percent from a year earlier.The bank's profits from last year were led by a reduction on its expenditure on risks and increases on the net interest margin - the difference between what it charges on customer´s loans and what it pays on customer´s deposits.