"Business banking" might be a euphemism for "property development" at Bank of Queensland.The bank has never provided much insight into this part of its business. Yesterday, though, and in the context of sharper interest in bank risk management, BOQ provided some data on large exposures.The bank said it had 59 loans of more than $10 million and with a combined commitment of $1.56 billion, or an average of $26 million. The average size of the top 20 loans is $47 million.BOQ said 85 per cent of large exposures were to the property and construction finance sectors.The bank said it recorded asset growth of 64 per cent in commercial lending, to $4.1 billion, over two years. The bank also recorded asset growth of 53 per cent in leasing, to $2.9 billion, over two years.