Quarter	Sterling
2003-03-31	9599
2003-06-30	7841
2003-09-30	10765
2003-12-31	13369
2004-03-31	5929
2004-06-30	19072
2004-09-30	11594
2004-12-31	15144
2005-03-31	21864
2005-06-30	15808
2005-09-30	9285
2005-12-31	14118
2006-03-31	22785
2006-06-30	15612
2006-09-30	17568
2006-12-31	17954
2007-03-31	24087
2007-06-30	23512
2007-09-30	27821
2007-12-31	22142
2008-03-31	8869
2008-06-30	45830
2008-09-30	37317
2008-12-31	114239
2009-03-31	19127
2009-06-30	27640
2009-09-30	2401
2009-12-31	413
2010-03-31	21960
2010-06-30	-2522
2010-09-30	15765
2010-12-31	-14088
2011-03-31	11588
2011-06-30	-17025
2011-09-30	-11619
2011-12-31	-60440
2012-03-31	4547
2012-06-30	-12485
2012-09-30	-16761
2012-12-31	-16190
2013-03-31	-24540
2013-06-30	-15202
2013-09-30	-11307
2013-12-31	1246
2014-03-31	1805
2014-06-30	1789
2014-09-30	5169
2014-12-31	-10489
2015-03-31	-3533
2015-06-30	7530
2015-09-30	3210
2015-12-31	-3792
2016-03-31	11011
2016-06-30	4421
2016-09-30	-1393
2016-12-31	-19633
2017-03-31	876
2017-06-30	8599
2017-09-30	8090
2017-12-31	3529
2018-03-31	26297
2018-06-30	881
2018-09-30	13137
2018-12-31	-3988
2019-03-31	10107
2019-06-30	6810
2019-09-30	5663
2019-12-31	-1557