Senator WILLIAMS (New South Wales—Nationals Whip in the Senate) (14:36): My question is to the minister representing the Minister for Climate Change and Energy Efficiency, Senator Wong. I refer the minister to a speech she made to the Economist Conference on 23 August 2011, where she said: Previous Parliaments have recognised the importance of economic reform and the role those reforms played in providing a stable platform for economic growth and prosperity. Given that the minister has often referred to the government's carbon tax as an economic reform, can the minister explain how the carbon tax will provide economic growth and prosperity when, according to page 101 of Treasury's own report into the carbon tax, it is set to reduce our economic output by $32 billion by the year 2020 and by over $1 trillion by the year 2050?