German investor optimism drops unexpectedly

FILE - In this Jan. 25, 2012 file photo cranes are silhouetted against the sky while clouds of the steel producing company's in background show up in Orsoy, Germany. Germany's economy, Europe's largest, grew a larger-than-expected 0.3 percent in the second quarter as consumer spending and strong exports helped stave off effects of the eurozone debt crisis, the Federal Statistical Office said Tuesday, Aug. 14, 2012. Though a slowdown from the 0.5 percent growth of gross domestic product in the first quarter, the gain was greater than the 0.2 percent widely forecast by economists. (AP Photo/Frank Augstein, File)
FILE - In this Jan. 25, 2012 file photo cranes are silhouetted against the sky while clouds of the steel producing company's in background show up in Orsoy, Germany. Germany's economy, Europe's largest, grew a larger-than-expected 0.3 percent in the second quarter as consumer spending and strong exports helped stave off effects of the eurozone debt crisis, the Federal Statistical Office said Tuesday, Aug. 14, 2012. Though a slowdown from the 0.5 percent growth of gross domestic product in the first quarter, the gain was greater than the 0.2 percent widely forecast by economists. (AP Photo/Frank Augstein, File)

BERLIN (AP) — A key measure of German investor confidence has fallen unexpectedly to its lowest level this year amid worries that Germany's economy will cool off as Europe's financial crisis continues.

The ZEW institute said Tuesday its index fell to minus 25.5 points in August from minus 19.6 the month before. Analysts had been predicting a slight increase.

ZEW notes, however, that the indicator is well above the negative balance it reached amid the financial crisis in 2008, when it dipped at one point below the minus 60 points mark.