I am advised by Revenue that while Revenue holds information on ages of taxpayers, this information is not complete and therefore may not provide for a robust analysis of income by age bracket. In addition, I am further advised that Revenue's incomes data primarily reflects those cases in employment or self-employment and does not contain a complete picture of incomes from social welfare sources. Notwithstanding the above caveats, Revenue and my Department would always attempt to produce any analysis requested by a Deputy if this is feasible and can be done accurately.