Senator BRANDIS (Queensland—Deputy Leader of the Opposition in the Senate) (14:00): My question is to the Minister representing the Minister for Climate Change and Energy Efficiency, Senator Wong. I refer the minister to modelling undertaken by the Centre for International Economics showing that, under the Gillard government's carbon tax, by 2020 Australia's GDP will fall by $180 billion, real wages will fall by 1.9 per cent, average household earnings will fall by $11,340, productivity will fall by 1.9 per cent per worker and electricity prices will rise by nearly 30 per cent. Given those facts, how then can the Gillard government stand by its claim that the world's biggest carbon tax will be good for Australia?