One way of tackling this problem would be to use a smart combination of selection criteria – for instance, combining a balance sheet threshold with a prudential decision based on the institutions' risk profiles. But there are still many crucial details and potential pitfalls that need to be addressed before we can even begin devoting serious thought to an option of this kind.
This is up by 2 percentage points from the average rate of increase over the previous quarter of a century (Graph 2). Graph 2  One implication of this pick-up in investment is a pick-up in growth in the economy’s overall capital-labour ratio. Again, over the 25 years to 2005, this ratio increased at an average annual rate of around 1¾ per cent.