I refer the hon. Member to the answer given on 6 May 2008, Official Report, columns 740-41W.
This information was taken from the Department’s Land Use Change Statistics (LUCS). Because of the way that LUCS data are collected, the statistics are variable from year to year. At spatial scales below the regional level investigation has shown that annual figures are highly volatile and not robust. Information for local authorities and counties were therefore given as multi-year averages.