The US dollar fell to its lowest level in 12 months against the euro and the yen in trading on Wednesday (September 23rd) as foreign exchange traders moved into riskier assets such as the New Zealand and Australian dollars.Trading in antipodean currencies has been bolstered by a raft of positive economic data from New Zealand, which included statistics showing that the country achieved unexpected growth last quarter.Investors also responded positively to the announcement from national dairy export giant Fonterra earlier this week forecasting a sharp upward correction in global milk prices.Speaking to Bloomberg, Tony Bieber, a foreign exchange trader at Suncorp-Metway in Brisbane, said that figures from Statistics New Zealand showing a 0.1 per cent rise in gross domestic product in the second quarter encouraged traders to flock to the currency once more."Early in the session the market was looking for direction and the kiwis gave it. The kiwis are leading the charge against the US dollar," he reflected.