The GKI economic sentiment index deteriorated marginally in May. According to the empirical survey conducted by GKI with the support of the EU, this was the result of the deterioration in consumer expectations as business expectations improved slightly. Nevertheless, the GKI economic sentiment index is only slightly below its historic peak reached in February.
You can download the report from here.
You can download the survey data in Excel 2007 format from here.
You can reach the archive of survey summaries here.