Quarter	US dollars
2004-12-31	32295
2005-03-31	31245
2005-06-30	31233
2005-09-30	33575
2005-12-31	32121
2006-03-31	30779
2006-06-30	31677
2006-09-30	34717
2006-12-31	32122
2007-03-31	31742
2007-06-30	33266
2007-09-30	37460
2007-12-31	33845
2008-03-31	36993
2008-06-30	35812
2008-09-30	45016
2008-12-31	60568
2009-03-31	67175
2009-06-30	87045
2009-09-30	90089
2009-12-31	101321
2010-03-31	94974
2010-06-30	97283
2010-09-30	101010
2010-12-31	93622
2011-03-31	96238
2011-06-30	99292
2011-09-30	103479
2011-12-31	102457
2012-03-31	107509
2012-06-30	101932
2012-09-30	105350
2012-12-31	117102
2013-03-31	122494
2013-06-30	113956
2013-09-30	121055
2013-12-31	127175
2014-03-31	124449
2014-06-30	119546
2014-09-30	131675
2014-12-31	115793
2015-03-31	118865
2015-06-30	132124
2015-09-30	134619
2015-12-31	124465
2016-03-31	134590
2016-06-30	142754
2016-09-30	147841
2016-12-31	137276
2017-03-31	136491
2017-06-30	129987
2017-09-30	137745
2017-12-31	140619
2018-03-31	135532
2018-06-30	134504
2018-09-30	143510
2018-12-31	152298
2019-03-31	144600
2019-06-30	145809
2019-09-30	146153
2019-12-31	155295
2020-03-31	151376
2020-06-30	174430
2020-09-30	184539
2020-12-31	199884
2021-03-31	198142
2021-06-30	191986
2021-09-30	203096
2021-12-31	188735
2022-03-31	201379
2022-06-30	204317
2022-09-30	209467
2022-12-31	210262
2023-03-31	211770
2023-06-30	208434
2023-09-30	203401