High expectations for a stimulus package for Europe’s biggest economy improved confidence in German investors. The confidence surge was the maximum during the past 15 years.

The Mannheim-based ZEW institute's survey by financial experts indicated that the next half year prospects showed positive attitude. This is the fourth consecutive month when the index improved to minus 31 points in January to minus 5.8 points.

The ZEW regards the improvement due to the new €50 billion ($63.8 billion) stimulus package by Chancellor Angela Merkel's government that includes investments in infrastructure, tax relief, reductions in health care contributions and bonuses for families with children. The package has received an approval in the lower house and is expected to be presented before the upper house. 

"For the fourth time in a row, the experts are more optimistic regarding the development of the German economy on a six months time horizon," the ZEW said in a statement. "This might be explained by the fiscal and monetary policy measures launched by the German government and the ECB to stimulate the economy."