The Australian Dollar.....

The Australian dollar (sign: $; code: AUD) is the currency of Australia, including its external territories: Christmas Island, Cocos (Keeling) Islands, and Norfolk Island..... It is officially used as currency by three independent Pacific Island states: Kiribati, Nauru, and Tuvalu. It is legal tender in Australia. Within Australia, it is almost always abbreviated with the dollar sign ($), with A$ or AU$ sometimes used to distinguish it from other dollar-denominated currencies. The $ symbol precedes the amount. It is subdivided into 100 cents.

The Australian dollar was introduced on 14 February 1966 to replace the pre-decimal Australian pound, with the conversion rate of A$2 per = A₤1. The Australian dollar was legal tender of Papua New Guinea until 31 December 1975, when the Papua New Guinean kina became sole legal tender, and of the Solomon Islands until 1977, when the Solomon Islands dollar became sole legal tender.

In 2016, the Australian dollar was the fifth most traded currency in world foreign exchange markets, accounting for 6.9% of the world's daily share (down from 8.6% in 2013) behind the United States dollar, the European Union's euro, the Japanese yen and the United Kingdom's pound sterling. The Australian dollar is popular with currency traders, because of the comparatively high interest rates in Australia, the relative freedom of the foreign exchange market from government intervention, the general stability of Australia's economy and political system, and the prevailing view that the Australian dollar offers diversification benefits in a portfolio containing the major world currencies, especially because of its greater exposure to Asian economies and the commodities cycle.

As at 31 December 2016, there were US$57.71 billion equivalent in Australian currency in circulation, $2,379.05 per person in Australia, which includes cash reserves held by the banking system and cash in circulation in other countries or held as a foreign exchange reserve.