The Australian dollar has been rising strongly over the past six months and not just against the US dollar where this morning it is hovering just under 78 cents. The Aussie dollar is also buying over 0.72 euros, the highest level it has been since early 2015 and is up some 10 per cent since May last year. It is also strong against the British pound, Japanese yen, and Canadian dollar. In simple terms, the Aussie dollar is flying. The reasons for the strength are clear.