Property website Rightmove reported a similar increase in business to last year as the UK housing market stabilised, but said it was trading in line with full-year expectations.The group said membership was up 2% since the first half of the year and 5% in the year to date, reaching a record 19,320 agents and new homes developments. This was up from 18,372 at the same time a year ago, when it also rose 2% on the year before.Average revenue per advertiser (ARPA) continued to grow as customers invested more on Rightmove advertising products.Page impressions on its website were up 7% on the same period last year.Agency membership at the end of October stood at 16,913, a 1% increase since the first half of the year, with expansion driven by an increase in the number of sales offices.With continued growth in customer numbers and average spend per advertiser, the board remains confident of meeting its expectations for the year.Chief executive Nick McKittrick said the group had increased enquiries to its customers by more than 10%.:"With continued growth in customer numbers and average spend per advertiser, the board remains confident of meeting its expectations for the year," he said.Shares rose 4p to 2,210p in early trading in London.