Ms Rosalind Carroll:

Yes. The methodology for this is very complicated. Originally, when we did the rent index it was always based on national data, Dublin data and outside of Dublin data so in a very short space of time we have had to be able to analyse our data at a much more granular level than we had done previously. That meant we had to review our methodology with the ESRI. We use a hedonic regression methodology, which essentially means that we can look at the property characteristics. When we look at data currently we might see simple averages, and there is no weighting in them for a one-bedroom, two-bedroom or three-bedroom house. What we needed to do was analyse whether there were enough data within the local electoral area, LEA, level to be able to say whether there was a sufficient population size within that area to allow us make any proper and substantive analysis that we could stand over. We have done that at LEA level. We do that by building up from an electoral district, ED, level but we would have to do further testing in terms of methodology to see if there was enough of a sound population size across the country to bring it down to ED level. I am not trying to avoid answering the question but it takes a good deal of work and it is something on which we do quite a lot of testing before bringing it any further.