Quarter	US dollars
2004-12-31	23217
2005-03-31	22263
2005-06-30	21064
2005-09-30	28547
2005-12-31	24271
2006-03-31	26361
2006-06-30	24075
2006-09-30	27917
2006-12-31	31437
2007-03-31	31953
2007-06-30	37748
2007-09-30	48176
2007-12-31	37156
2008-03-31	50556
2008-06-30	40435
2008-09-30	43574
2008-12-31	34054
2009-03-31	42620
2009-06-30	52436
2009-09-30	32456
2009-12-31	31137
2010-03-31	47265
2010-06-30	55289
2010-09-30	52026
2010-12-31	44155
2011-03-31	52623
2011-06-30	57583
2011-09-30	72796
2011-12-31	32717
2012-03-31	193456
2012-06-30	161130
2012-09-30	153921
2012-12-31	135612
2013-03-31	86530
2013-06-30	77015
2013-09-30	50209
2013-12-31	48197
2014-03-31	42018
2014-06-30	25492
2014-09-30	23428
2014-12-31	21558
2015-03-31	24306
2015-06-30	32364
2015-09-30	38911
2015-12-31	55227
2016-03-31	52056
2016-06-30	62153
2016-09-30	63487
2016-12-31	89339
2017-03-31	101602
2017-06-30	103624
2017-09-30	117798
2017-12-31	107472
2018-03-31	91941
2018-06-30	81418
2018-09-30	97832
2018-12-31	59800
2019-03-31	82639
2019-06-30	82845
2019-09-30	74032
2019-12-31	76915
2020-03-31	81033
2020-06-30	102852
2020-09-30	103422
2020-12-31	118495
2021-03-31	112277
2021-06-30	118050
2021-09-30	113642
2021-12-31	113452
2022-03-31	121109
2022-06-30	115318
2022-09-30	107770
2022-12-31	123252
2023-03-31	127514
2023-06-30	127729
2023-09-30	122970