From 1 January to 31 December 2010, employees of the CSSA headquarters Information Office dealt with 97,840 enquiries from clients. Of that number, 11,365 clients sought information about the implementation of EU social security law or international treaties on social security. That means that on average 387 clients contacted this office per day. There was also increased demand for other services provided by the Information Office. Copies of entitlement documents containing data about insurance periods were provided to 10,126 clients. Confirmations of pension amounts were handed over to 7,642 applicants.