Quarter	US dollars
2004-12-31	11089
2005-03-31	17929
2005-06-30	9807
2005-09-30	17203
2005-12-31	19791
2006-03-31	19931
2006-06-30	27763
2006-09-30	29596
2006-12-31	24699
2007-03-31	35727
2007-06-30	21176
2007-09-30	21749
2007-12-31	12636
2008-03-31	30282
2008-06-30	24082
2008-09-30	28628
2008-12-31	25706
2009-03-31	33754
2009-06-30	39492
2009-09-30	36638
2009-12-31	37321
2010-03-31	47570
2010-06-30	44578
2010-09-30	39002
2010-12-31	43659
2011-03-31	44222
2011-06-30	55234
2011-09-30	40560
2011-12-31	110902
2012-03-31	46236
2012-06-30	54041
2012-09-30	29451
2012-12-31	34147
2013-03-31	29152
2013-06-30	25267
2013-09-30	31480
2013-12-31	32284
2014-03-31	28372
2014-06-30	24671
2014-09-30	27971
2014-12-31	25485
2015-03-31	36109
2015-06-30	38472
2015-09-30	37066
2015-12-31	32550
2016-03-31	37478
2016-06-30	28868
2016-09-30	26000
2016-12-31	24257
2017-03-31	36969
2017-06-30	42259
2017-09-30	45369
2017-12-31	64655
2018-03-31	39820
2018-06-30	25585
2018-09-30	53047
2018-12-31	86228
2019-03-31	75117
2019-06-30	85460
2019-09-30	62880
2019-12-31	71165
2020-03-31	94123
2020-06-30	97632
2020-09-30	100816
2020-12-31	116421
2021-03-31	150438
2021-06-30	149070
2021-09-30	119842
2021-12-31	126224
2022-03-31	147289
2022-06-30	163904
2022-09-30	156372
2022-12-31	156849
2023-03-31	148823
2023-06-30	150225
2023-09-30	152764