Ms PLIBERSEK (Sydney—Deputy Leader of the Opposition) (14:13): My question is to the Treasurer. When the Treasurer answered the exact same question last year, why is the Treasurer refusing to tell Australians how much his corporate tax cuts cost over the next 10 years— Mr Fletcher interjecting— The SPEAKER: Will the Deputy Leader of the Opposition pause and perhaps stay at the dispatch box. The Minister for Urban Infrastructure was interjecting, and he interjects in a particularly piercing tone. I ask him to cease interjecting. Can I ask the Deputy Leader of the Opposition to begin the question again? The clock will start again— Honourable members interjecting— The SPEAKER: Members on both sides. If members can cease interjecting, we can get on with their question time. Ms PLIBERSEK: Thank you, Mr Speaker. My question is to the Treasurer. When the Treasurer answered the exact same question last year, why is the Treasurer refusing to tell Australians how much his corporate tax cuts cost over the next 10 years? So I ask: what is the total cost of corporate tax cuts over 10 years from 1 July 2018, both legislated and proposed to be legislated by the government?