Quarter Sterling (millions), Seasonally adjusted 2010-03-31 4040 2010-06-30 4560 2010-09-30 5312 2010-12-31 5242 2011-03-31 5152 2011-06-30 5287 2011-09-30 6114 2011-12-31 6552 2012-03-31 7172 2012-06-30 7993 2012-09-30 7264 2012-12-31 8133 2013-03-31 9734 2013-06-30 10346 2013-09-30 10622