Germany’s economic outlook took a dramatic and unexpected downturn in September, signalling a deepening slump in confidence for the eurozone’s largest economy. The ZEW Economic Sentiment Index, a key measure of the economic morale held by financial experts, dropped from 19.2 points in August to just 3.6 points in September, well below forecasts of 17 points. This marks the index’s lowest level since October 2023. The sub-index measuring current conditions fell sharply to -84.5 points, down from -77.3 points in August and significantly below expectations of -80 points. It is the weakest reading…