A survey by the ZEW Institute and Credit Suisse Group showed on Wednesday that Switzerland's economic sentiment index jumped to 16.6 in December from 0.0 in November.

"As in the previous months, the clear majority of survey respondents regard the present state of Switzerland's economy as being "normal". The group of analysts sharing this assessment has increased slightly and now amounts to 86.1 per cent of respondents," the ZEW said.

The current conditions climbed to -2.7 in December from -12.2 points in November.