Mr. Lilley: To ask the Chancellor of the Exchequer what estimate he has made of the growth of the population up to 2031; what that estimate would be if there were no net immigration in future; and what estimate he has made of the proportion of expected population growth which is due to net immigration and dependants. 
Ruth Kelly: The Government Actuary‘s latest (2002-based) principal population projection was published in December 2003. The Government Actuary also published a range of variant projections based on alternative assumptions in January 2004. The variant projections included a ‘Natural Change‘ projection which assumes zero net migration in future. Relevant results from the principal projection and the natural change variant projection are summarised in the following table.