Quarter	US dollars
2004-12-31	1709
2005-03-31	1637
2005-06-30	1775
2005-09-30	44912
2005-12-31	48259
2006-03-31	51888
2006-06-30	46866
2006-09-30	46429
2006-12-31	53798
2007-03-31	55030
2007-06-30	58926
2007-09-30	63428
2007-12-31	66972
2008-03-31	58550
2008-06-30	63202
2008-09-30	60898
2008-12-31	54012
2009-03-31	56155
2009-06-30	66002
2009-09-30	66556
2009-12-31	67093
2010-03-31	69049
2010-06-30	66255
2010-09-30	71115
2010-12-31	76202
2011-03-31	72752
2011-06-30	71476
2011-09-30	60616
2011-12-31	58582
2012-03-31	65522
2012-06-30	60523
2012-09-30	61059
2012-12-31	62239
2013-03-31	57217
2013-06-30	53744
2013-09-30	54383
2013-12-31	52662
2014-03-31	54659
2014-06-30	54027
2014-09-30	52011
2014-12-31	52421
2015-03-31	52842
2015-06-30	55769
2015-09-30	53108
2015-12-31	52627
2016-03-31	47422
2016-06-30	46628
2016-09-30	50603
2016-12-31	49798
2017-03-31	52878
2017-06-30	5714
2017-09-30	6382
2017-12-31	6498
2018-03-31	6146
2018-06-30	4686
2018-09-30	4623
2018-12-31	4196
2019-03-31	4719
2019-06-30	4902
2019-09-30	4234
2019-12-31	4482
2020-03-31	3811
2020-06-30	3378
2020-09-30	3480
2020-12-31	3564
2021-03-31	4311
2021-06-30	4215
2021-09-30	4069
2021-12-31	4078
2022-03-31	4924
2022-06-30	3172
2022-09-30	2498
2022-12-31	2870
2023-03-31	3097
2023-06-30	2610
2023-09-30	2381