Quarter	US dollars
2004-12-31	58695
2005-03-31	69967
2005-06-30	68954
2005-09-30	71682
2005-12-31	69689
2006-03-31	87358
2006-06-30	89591
2006-09-30	101341
2006-12-31	114013
2007-03-31	141420
2007-06-30	161082
2007-09-30	172843
2007-12-31	159399
2008-03-31	167759
2008-06-30	136246
2008-09-30	131690
2008-12-31	100958
2009-03-31	89602
2009-06-30	121580
2009-09-30	122548
2009-12-31	117603
2010-03-31	150960
2010-06-30	138237
2010-09-30	153123
2010-12-31	135278
2011-03-31	151945
2011-06-30	148857
2011-09-30	140340
2011-12-31	101192
2012-03-31	104012
2012-06-30	98914
2012-09-30	95513
2012-12-31	88452
2013-03-31	111381
2013-06-30	109683
2013-09-30	95805
2013-12-31	84213
2014-03-31	91920
2014-06-30	86118
2014-09-30	84046
2014-12-31	73592
2015-03-31	59052
2015-06-30	53354
2015-09-30	53770
2015-12-31	44164
2016-03-31	43928
2016-06-30	44741
2016-09-30	41435
2016-12-31	35380
2017-03-31	48084
2017-06-30	79963
2017-09-30	77854
2017-12-31	67054
2018-03-31	85433
2018-06-30	78300
2018-09-30	75802
2018-12-31	62254
2019-03-31	93946
2019-06-30	96438
2019-09-30	104092
2019-12-31	82251
2020-03-31	116695
2020-06-30	120991
2020-09-30	148636
2020-12-31	147338
2021-03-31	146973
2021-06-30	140230
2021-09-30	148467
2021-12-31	127616
2022-03-31	156079
2022-06-30	142434
2022-09-30	151231
2022-12-31	174486
2023-03-31	174530
2023-06-30	174060
2023-09-30	168049