Senator CORMANN (Western Australia—Minister for Finance) (14:46): One of the key structural economic challenges we as a nation are facing—and this is not a partisan point; this is a very serious point— Opposition senators interjecting— Senator Leyonhjelm: Mr President, I rise on a point of order. I cannot hear the minister's answer. The PRESIDENT: I concur with your comment, Senator Leyonhjelm. Order, on my left, in particular. Senator CORMANN: One of the most significant structural economic challenges we as a nation are facing is related to the ageing of the population, which brings with it falling workforce participation rates. Falling workforce participation rates are a drag on economic growth as well as obviously having implications for government expenditure. I hear people on the Labor side yawning as I explain this. These are actually very serious issues to do with our national interest. We need to ensure that we lift workforce participation by women, by older Australians and by young people who are currently unemployed in order to boost economic growth. As you rightly indicated before, boosting economic growth is part of repairing the budget. An infrastructure investment— (Time expired)