Currency markets have been tied to global sentiment recently, and key figures released this week may dictate the roles of G8 currencies in the future.The debt auction in Portugal will be a key indicator of euro strength, which has been dominant in determining currency risk. The Australian dollar and New Zealand dollar are foreign currencies that have both experienced peaks and troughs in line with euro confidence. Better sentiment allows a risk rally and props up the currencies, whereas a loss in confidence will drive investors to safe currencies such as the dollar and the yen.America will be releasing a raft of key data that will be crucial in analysing the global economic outlook. The Canadian dollar has risen significantly today on the expectation that America's exports will be positive. The Bank of Canada will set new interest rates imminently, which will also contribute to a currency rise.Job figures are due in Australia this week, which will follow reports from the country that there has been a modest rise in consumer confidence, despite two central bank rate cuts. Economists say the Reserve Bank of Australia will need to ease policy again in February in order to prop up the market.For more information on foreign exchange treasury services and risk management, visit our Corporate FX site