The Australia Institute appears to be succeeding in drawing some attention to its policy proposal to reduce aggregate bank profits to two thirds of their current level, with the governor of the Reserve Bank of Australia indirectly tackling the topic.Glenn Stevens, in the Shann Memorial Lecture delivered last night at the University of Western Australia, pointed out that "in most modern economies, the share of GDP accounted for by services generally has long been growing as agriculture and manufacturing get (relatively) smaller."It would not be surprising for the finance sector to be part of that. So it might make more sense to measure the financial sector as a share of the services sector, rather than as a share of total GDP."On this basis it will still have shown a distinct rise, but not quite as much," Stevens said."In Australia's case," he said, "the finance sector's share of services sector employment peaked around 1990, thereafter declined somewhat and has changed little for a decade."In the conventional definition of income shares, the share of national income generated by banks is equal to three per cent of GDP. Josh Fear, Richard Denniss and David Richardson from the Australia Institute in their report 'Money and power: the case for better regulation in banking' call for this to be cut to one per cent.