Quarter	US dollars
2004-12-31	960
2005-03-31	979
2005-06-30	868
2005-09-30	1314
2005-12-31	1019
2006-03-31	1258
2006-06-30	1640
2006-09-30	1734
2006-12-31	1869
2007-03-31	2203
2007-06-30	2426
2007-09-30	5776
2007-12-31	8734
2008-03-31	8731
2008-06-30	8756
2008-09-30	3976
2008-12-31	2788
2009-03-31	2747
2009-06-30	3052
2009-09-30	3221
2009-12-31	3381
2010-03-31	3076
2010-06-30	3592
2010-09-30	3737
2010-12-31	4114
2011-03-31	6224
2011-06-30	5053
2011-09-30	5622
2011-12-31	5111
2012-03-31	6444
2012-06-30	5890
2012-09-30	5171
2012-12-31	6272
2013-03-31	6929
2013-06-30	6975
2013-09-30	8776
2013-12-31	8768
2014-03-31	8203
2014-06-30	7636
2014-09-30	10582
2014-12-31	15379
2015-03-31	14624
2015-06-30	14150
2015-09-30	13478
2015-12-31	13005
2016-03-31	13954
2016-06-30	18039
2016-09-30	13131
2016-12-31	15712
2017-03-31	16858
2017-06-30	16656
2017-09-30	16338
2017-12-31	16003
2018-03-31	5988
2018-06-30	7910
2018-09-30	6773
2018-12-31	7435
2019-03-31	6726
2019-06-30	6794
2019-09-30	8842
2019-12-31	9625
2020-03-31	8139
2020-06-30	7382
2020-09-30	7124
2020-12-31	5596
2021-03-31	5627
2021-06-30	4816
2021-09-30	5500
2021-12-31	4175
2022-03-31	4370
2022-06-30	3700
2022-09-30	3087
2022-12-31	2209
2023-03-31	3748
2023-06-30	3078
2023-09-30	2850