Quarter	US dollars
2004-12-31	68546
2005-03-31	92936
2005-06-30	80890
2005-09-30	87339
2005-12-31	61607
2006-03-31	70644
2006-06-30	85681
2006-09-30	92749
2006-12-31	90749
2007-03-31	96196
2007-06-30	102958
2007-09-30	119650
2007-12-31	96334
2008-03-31	121697
2008-06-30	123886
2008-09-30	110332
2008-12-31	71811
2009-03-31	86889
2009-06-30	99256
2009-09-30	89265
2009-12-31	91304
2010-03-31	80053
2010-06-30	84104
2010-09-30	92145
2010-12-31	86278
2011-03-31	87824
2011-06-30	101289
2011-09-30	96018
2011-12-31	80578
2012-03-31	90782
2012-06-30	84030
2012-09-30	83875
2012-12-31	81572
2013-03-31	77845
2013-06-30	77593
2013-09-30	84866
2013-12-31	87941
2014-03-31	83063
2014-06-30	82799
2014-09-30	83472
2014-12-31	80197
2015-03-31	78161
2015-06-30	74637
2015-09-30	68843
2015-12-31	60905
2016-03-31	66955
2016-06-30	67166
2016-09-30	61045
2016-12-31	61027
2017-03-31	60989
2017-06-30	75155
2017-09-30	76066
2017-12-31	68450
2018-03-31	76662
2018-06-30	82313
2018-09-30	79441
2018-12-31	76457
2019-03-31	86690
2019-06-30	78896
2019-09-30	76415
2019-12-31	70584
2020-03-31	74798
2020-06-30	69102
2020-09-30	59069
2020-12-31	50514
2021-03-31	71230
2021-06-30	92884
2021-09-30	103216
2021-12-31	95669
2022-03-31	99832
2022-06-30	79443
2022-09-30	82487
2022-12-31	82173
2023-03-31	88070
2023-06-30	97460
2023-09-30	96570