Overall, our capital cities contributed $854 billion to our economy in 2011. This is projected to grow by 90 percent to a contribution of $1.6 trillion in 2031. Our cities are vital economic engines - but unless action is taken, growing congestion threatens to cost Australians $53 billion by 2031 as the population increases to 30.5 million.
Growth is not only a challenge in our cities. Other hot spots such as the Pilbara and Gladstone are growing at a rapid rate. Today they contribute $44 billion, largely through resources and agricultural activities. By 2031 this is projected to more than double to $110 billion. Efficient infrastructure - particularly roads, rail, ports and gas pipelines-is vital to ensure these vibrant regions continue to grow and maintain their significant contribution to the Australian economy.