Quarter	US dollars
2004-12-31	17394
2005-03-31	19649
2005-06-30	18888
2005-09-30	22687
2005-12-31	20239
2006-03-31	28361
2006-06-30	24138
2006-09-30	26945
2006-12-31	27545
2007-03-31	35227
2007-06-30	37588
2007-09-30	46573
2007-12-31	49538
2008-03-31	55525
2008-06-30	52071
2008-09-30	57393
2008-12-31	52250
2009-03-31	52959
2009-06-30	54193
2009-09-30	53754
2009-12-31	53621
2010-03-31	62107
2010-06-30	62121
2010-09-30	67340
2010-12-31	70593
2011-03-31	67183
2011-06-30	68522
2011-09-30	73816
2011-12-31	65964
2012-03-31	66214
2012-06-30	68891
2012-09-30	68675
2012-12-31	64569
2013-03-31	60540
2013-06-30	57412
2013-09-30	63458
2013-12-31	56037
2014-03-31	59926
2014-06-30	59041
2014-09-30	61820
2014-12-31	60492
2015-03-31	62555
2015-06-30	60442
2015-09-30	64434
2015-12-31	59789
2016-03-31	59699
2016-06-30	61270
2016-09-30	63334
2016-12-31	60314
2017-03-31	59894
2017-06-30	70551
2017-09-30	68977
2017-12-31	72299
2018-03-31	74817
2018-06-30	69981
2018-09-30	69919
2018-12-31	71551
2019-03-31	76495
2019-06-30	78270
2019-09-30	77360
2019-12-31	77887
2020-03-31	78623
2020-06-30	76956
2020-09-30	74370
2020-12-31	83088
2021-03-31	78405
2021-06-30	82508
2021-09-30	77822
2021-12-31	86172
2022-03-31	84279
2022-06-30	84870
2022-09-30	84143
2022-12-31	86540
2023-03-31	88921
2023-06-30	90390
2023-09-30	83302