Quarter Sterling (millions), Seasonally adjusted 1997-12-31 10476 1998-03-31 10124 1998-06-30 10451 1998-09-30 10758 1998-12-31 10835 1999-03-31 12491 1999-06-30 14387 1999-09-30 15967 1999-12-31 15761 2000-03-31 14823 2000-06-30 14230 2000-09-30 13137 2000-12-31 14975 2001-03-31 22345 2001-06-30 24268 2001-09-30 25362 2001-12-31 24138 2002-03-31 30865 2002-06-30 31461 2002-09-30 30737 2002-12-31 32099 2003-03-31 27260 2003-06-30 28953 2003-09-30 38379 2003-12-31 41864 2004-03-31 40458 2004-06-30 39522 2004-09-30 31434 2004-12-31 27914 2005-03-31 30111 2005-06-30 34572 2005-09-30 37989 2005-12-31 44443 2006-03-31 45490 2006-06-30 45947 2006-09-30 48955 2006-12-31 52484 2007-03-31 49840 2007-06-30 48751 2007-09-30 46857 2007-12-31 34801 2008-03-31 29667 2008-06-30 18705 2008-09-30 12391 2008-12-31 10485 2009-03-31 14096 2009-06-30 18229 2009-09-30 21889 2009-12-31 23383 2010-03-31 19759 2010-06-30 21137 2010-09-30 20151 2010-12-31 18882 2011-03-31 18904 2011-06-30 19633 2011-09-30 21777 2011-12-31 21903 2012-03-31 23253 2012-06-30 22261 2012-09-30 21769 2012-12-31 23433 2013-03-31 23537 2013-06-30 26295 2013-09-30 29035 2013-12-31 34061 2014-03-31 33825 2014-06-30 31566 2014-09-30 31730 2014-12-31 29634 2015-03-31 30901 2015-06-30 34091 2015-09-30 36968 2015-12-31 37236 2016-03-31 38632 2016-06-30 35391 2016-09-30 32527 2016-12-31 36609 2017-03-31 36986 2017-06-30 35974 2017-09-30 36472 2017-12-31 35694 2018-03-31 35611 2018-06-30 36031 2018-09-30 36814 2018-12-31 36839 2019-03-31 36692 2019-06-30 38000 2019-09-30 38955 2019-12-31 39761