Quarter Sterling (millions) 2004-03-31 17.5 2004-06-30 19.6 2004-09-30 20.8 2004-12-31 19.3 2005-03-31 20.1 2005-06-30 20 2005-09-30 21.9 2005-12-31 21.8 2006-03-31 25.4 2006-06-30 33 2006-09-30 35.6 2006-12-31 35.9 2007-03-31 22.2 2007-06-30 21.7 2007-09-30 23.3 2007-12-31 23 2008-03-31 23.4 2008-06-30 25.5 2008-09-30 26.5 2008-12-31 27.4 2009-03-31 30.5 2009-06-30 34.9 2009-09-30 33.6 2009-12-31 40.6 2010-03-31 41.6 2010-06-30 42.6 2010-09-30 44.9 2010-12-31 46.3 2011-03-31 38.1 2011-06-30 37.4 2011-09-30 34.9 2011-12-31 36.2 2012-03-31 33 2012-06-30 35.4 2012-09-30 34.8 2012-12-31 35.6 2013-03-31 12.5 2013-06-30 12.1 2013-09-30 11.9 2013-12-31 13 2014-03-31 12.4 2014-06-30 14.3 2014-09-30 11.1 2014-12-31 11.8 2015-03-31 12.3 2015-06-30 11.5 2015-09-30 11.9 2015-12-31 14 2016-03-31 14.3 2016-06-30 14.4 2016-09-30 13.6 2016-12-31 14.7 2017-03-31 14.3 2017-06-30 15.4 2017-09-30 13.4 2017-12-31 11.8 2018-03-31 9.7 2018-06-30 8.9 2018-09-30 8.2 2018-12-31 7.5 2019-03-31 8 2019-06-30 4.8 2019-09-30 4.7 2019-12-31 5.3 2020-03-31 4.3 2020-06-30 21.7 2020-09-30 13.6 2020-12-31 9.3 2021-03-31 7.8 2021-06-30 6.9 2021-09-30 7.8 2021-12-31 6.2 2022-03-31 5.3 2022-06-30 4.3 2022-09-30 5.8 2022-12-31 6.4 2023-03-31 7.8 2023-06-30 5 2023-09-30 5.8 2023-12-31 6.2