Quarter	US dollars
2004-12-31	31423
2005-03-31	37316
2005-06-30	46564
2005-09-30	59555
2005-12-31	40905
2006-03-31	53782
2006-06-30	46120
2006-09-30	63513
2006-12-31	48242
2007-03-31	63944
2007-06-30	42319
2007-09-30	50018
2007-12-31	52156
2008-03-31	67382
2008-06-30	58813
2008-09-30	45670
2008-12-31	52086
2009-03-31	48801
2009-06-30	38805
2009-09-30	41347
2009-12-31	50689
2010-03-31	54130
2010-06-30	46173
2010-09-30	53074
2010-12-31	60076
2011-03-31	55473
2011-06-30	50092
2011-09-30	56270
2011-12-31	59483
2012-03-31	65607
2012-06-30	67880
2012-09-30	66448
2012-12-31	56140
2013-03-31	48528
2013-06-30	43789
2013-09-30	55405
2013-12-31	34104
2014-03-31	37418
2014-06-30	38321
2014-09-30	27468
2014-12-31	30097
2015-03-31	33389
2015-06-30	29616
2015-09-30	29487
2015-12-31	25215
2016-03-31	22857
2016-06-30	17971
2016-09-30	15125
2016-12-31	15449
2017-03-31	15626
2017-06-30	19842
2017-09-30	16060
2017-12-31	19163
2018-03-31	26159
2018-06-30	55942
2018-09-30	20873
2018-12-31	22214
2019-03-31	16469
2019-06-30	38991
2019-09-30	41602
2019-12-31	35407
2020-03-31	39938
2020-06-30	40708
2020-09-30	41314
2020-12-31	39088
2021-03-31	39557
2021-06-30	41915
2021-09-30	36534
2021-12-31	45408
2022-03-31	53115
2022-06-30	52462
2022-09-30	56165
2022-12-31	55057
2023-03-31	66042
2023-06-30	63383
2023-09-30	58114