The second leg of this is fairness, and I'm really interested in the fairness argument here, because it is only fair that those who earn more pay more, and I strongly agree with that. As an upper-income earner for most of my career, I've been very happy to do that, and we have an income tax system that has to be efficient and broad based - low rate. But it's also highly distributive through things like Working for Families and accommodation supplements. The effect of that is that half of all households with children receive more in welfare payments and tax credits than they pay in tax, that single-income families with two children don't pay a dollar of net income tax until their income exceeds $60,000, and that the top 9 percent of income earners are now paying a whopping 42 percent of the total personal income tax—42 percent. And you know what?