Quarter	Sterling (millions)
2004-03-31	10.8
2004-06-30	10
2004-09-30	9.7
2004-12-31	9.4
2005-03-31	8.6
2005-06-30	8.1
2005-09-30	9.3
2005-12-31	7.3
2006-03-31	6.5
2006-06-30	5.2
2006-09-30	4.6
2006-12-31	5.2
2007-03-31	4.2
2007-06-30	3.6
2007-09-30	3.4
2007-12-31	2.8
2008-03-31	3.1
2008-06-30	2.7
2008-09-30	2.6
2008-12-31	2.6
2009-03-31	2.6
2009-06-30	2.6
2009-09-30	3.9
2009-12-31	6.7
2010-03-31	8.8
2010-06-30	12
2010-09-30	15.5
2010-12-31	17.5
2011-03-31	19
2011-06-30	18.3
2011-09-30	18.1
2011-12-31	16.7
2012-03-31	15.7
2012-06-30	17.1
2012-09-30	19
2012-12-31	19.3
2013-03-31	19.1
2013-06-30	18.3
2013-09-30	17.7
2013-12-31	16.5
2014-03-31	16.6
2014-06-30	20
2014-09-30	18.3
2014-12-31	17.4
2015-03-31	17.1
2015-06-30	16.8
2015-09-30	16.9
2015-12-31	15.3
2016-03-31	18
2016-06-30	18.8
2016-09-30	19
2016-12-31	18.4
2017-03-31	17.3
2017-06-30	16.2
2017-09-30	17.2
2017-12-31	16.9
2018-03-31	20.5
2018-06-30	22.3
2018-09-30	22.7
2018-12-31	22.3
2019-03-31	21.5
2019-06-30	22.5
2019-09-30	32.6
2019-12-31	35.7
2020-03-31	36.1
2020-06-30	30.9
2020-09-30	30.7
2020-12-31	34.7
2021-03-31	38
2021-06-30	40.4
2021-09-30	40.5
2021-12-31	41.6
2022-03-31	38.8
2022-06-30	36.5
2022-09-30	32.2
2022-12-31	27.2
2023-03-31	23.7
2023-06-30	22.4
2023-09-30	21.5
2023-12-31	23.2