Some would say the same about the UK. A weak dollar could make that more difficult.

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Looking back, they find it usually takes five to six months for UK markets to start to perform well in dollar terms after a big fall in the currency.

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The Lonely Planet suffered from the prolonged global recession and the Australian dollar appreciating to 58% against the UK pound - 80% of Lonely Planet's revenues are generated from foreign currency.

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Sterling has continued to weaken against the dollar and the euro on continued worries about the health of the UK economy.

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Some large department stores in London take euros and some other foreign currencies, such as the US dollar and the Japanese yen, but the official currency of the UK remains sterling.

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In fact, research conducted by Plan UK in 2009, shows that economies that fail to invest in girls, lose billions of dollar each year in the long-term.

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