I don't have any study in mind specifically. We would be happy to get back to you on that. Of course, each country has different contexts. There was a specific case that you will remember, the debacle of the British MPs' expenses. What was interesting was that the decision on what should be revealed was predicated upon the system in Great Britain for the management of the accounts or the supervision of the expenses.
I think we need to make some adaptation from country to country. Right now I do not have in mind the results of some studies, but if that is something the committee is interested in, we could get back to you on it.