For instance, one apparently straightforward observation is that the need to provide direct credit to the economy at times of dysfunctions in banking activity is likely to depend on the relative importance of the banking sector for financial intermediation.
; and Stiroh, K. (2002), “Information Technology and the U.S. Productivity Revival: What Do  the Industry Data Say?”, American Economic Review, Vol. 92, No 5, pp. 1559–1576. 28 The trend increase in the relative price of aggregate services is thus mostly driven by large expenditure  categories, such as housing, government and healthcare.