Investing.com -- The euro fell to its lowest since May 2017 against the dollar after another raft of weak inflation data - notably from Germany - bolstered speculation on more aggressive moves by the European Central Bank to support the euro zone economy. According to preliminary data, German inflation fell to an annual rate of 1.2% in September from 1.4% in August. The harmonized EU measure of inflation fell to an even lower 0.9%