Senator WONG (South Australia—Leader of the Opposition in the Senate) (14:05): Mr President, I ask a further supplementary question. I ask the Minister for Finance this question: does he even know how much the 10-year company tax cut plan costs? I will again ask the same question. Budget Paper No. 2, the measure entitled 'Ten Year Enterprise Tax Plan—reducing the company tax rate to 25 per cent': what is the cost of this measure over a 10-year period? Do you even know?