Tue 07 Jul 2007German ZEW index falls in JulySentiment among German investors about the outlook for Europe's largest economy deteriorated more than expected in July, the latest survey by the ZEW economic research institute showed today.The Mannheim-based think tank said its economic sentiment indicator, based on a survey of 306 analysts and institutional investors, fell to 10.4 this month from 20.3 in June.