I thank my right hon. Friend for his comments. It is certainly possible to use those historical returns. They are a year and a half out of date, so they will be necessarily imperfect. They also do not provide an easy way to distinguish between those who are deserving of support and whose incomes are being affected by what is happening, and those who are much wealthier and whose incomes are potentially increasing currently, but they do provide a basis and a universe to look at.