^^^ Nope, the other way round champ - in 2006 it was $0.74AUD to US$1
Nope you're the one who has it the wrong way around. $0.74 AUD to USD $1 is a STRONG Aussie dollar.
You're clearly remembering $0.74 USD per $1 AUD which is a WEAK Aussie dollar. eg. your $30,000 AUD would have bought you about $22,500 USD.