In relation to the dollar figures, we've heard some discussion about tax bracket creep, which is obviously not a derogatory term for a finance Minister one doesn't like—it's genuinely creep in the sense of increasing tax brackets. But I did wonder about the difference between those two numbers: the $31,000, roughly speaking, and the $30,500, and, obviously, I could ask you the difference between them, and, on the face of it, it would be roughly $500—or "five hundy", in the name of a card game of that name. But leaving aside the arithmetic that underlines the difference, I wonder if the Minister can speak to the reasoning behind that change. 