The Cabinet Office, on an annual basis, publishes a report to Parliament on the performance of Departments in replying to Members/peers correspondence. Information relating to 2008 will be published as soon as it has been collated. The report for 2007 was published on 20 March 2008, Official Report, columns 71-74WS. Reports for earlier years are available in the Libraries of the House.
In respect of e-mails, this Department will not be able to provide the information without incurring disproportionate cost. To do so would require gathering information from every official in the Department.