Mr. Sebastian Barnes:

I will let Professor McMahon answer the Deputy's first question. To give him a little notice to think about it, I will answer hiss second question now.

The area of tax expenditures is important. People tend to focus a great deal on tax rates, but much of what matters is the tax expenditures. They get less attention and are typically a little less transparent. I am not sure that I would generalise completely across all of them. They are a legitimate instrument but, as Dr. Lawless stated, they should be examined as part of the general tax package. One of the main risks is legitimacy. Often, these tax expenditures are regressive. I agree that they comprise an area to consider in terms of strengthening and broadening the tax base in the years to come.