Quarter	Sterling
1997-12-31	122729
1998-03-31	130761
1998-06-30	133389
1998-09-30	139020
1998-12-31	123712
1999-03-31	129811
1999-06-30	125575
1999-09-30	125618
1999-12-31	113149
2000-03-31	147772
2000-06-30	158297
2000-09-30	153284
2000-12-31	147247
2001-03-31	173282
2001-06-30	177575
2001-09-30	175521
2001-12-31	173380
2002-03-31	177776
2002-06-30	182762
2002-09-30	176097
2002-12-31	159081
2003-03-31	163905
2003-06-30	176203
2003-09-30	182500
2003-12-31	177197
2004-03-31	190667
2004-06-30	192691
2004-09-30	185121
2004-12-31	191077
2005-03-31	211072
2005-06-30	224417
2005-09-30	248279
2005-12-31	259683
2006-03-31	294643
2006-06-30	303775
2006-09-30	328982
2006-12-31	349446
2007-03-31	394200
2007-06-30	419823
2007-09-30	428829
2007-12-31	439855
2008-03-31	511094
2008-06-30	534872
2008-09-30	533240
2008-12-31	647181
2009-03-31	678584
2009-06-30	629664
2009-09-30	653495
2009-12-31	700405
2010-03-31	848365
2010-06-30	822281
2010-09-30	823048
2010-12-31	804871
2011-03-31	795317
2011-06-30	789933
2011-09-30	775956
2011-12-31	696583
2012-03-31	671316
2012-06-30	645541
2012-09-30	639238
2012-12-31	630492
2013-03-31	621635
2013-06-30	615316
2013-09-30	599651
2013-12-31	568803
2014-03-31	541122
2014-06-30	492422
2014-09-30	472033
2014-12-31	448950
2015-03-31	427660
2015-06-30	411054
2015-09-30	396221
2015-12-31	391424
2016-03-31	403546
2016-06-30	411367
2016-09-30	436506
2016-12-31	422900
2017-03-31	419110
2017-06-30	430933
2017-09-30	424180
2017-12-31	420632
2018-03-31	427657
2018-06-30	435839
2018-09-30	436400
2018-12-31	435632
2019-03-31	428647
2019-06-30	437365
2019-09-30	398814
2019-12-31	392567
2020-03-31	457270
2020-06-30	440563
2020-09-30	412066
2020-12-31	422434
2021-03-31	420397
2021-06-30	417298
2021-09-30	427605
2021-12-31	418908
2022-03-31	456236
2022-06-30	425129
2022-09-30	465286
2022-12-31	419305
2023-03-31	423922
2023-06-30	428660
2023-09-30	433012
2023-12-31	442446