Quarter	US dollars
2004-12-31	931
2005-03-31	970
2005-06-30	1047
2005-09-30	1753
2005-12-31	1825
2006-03-31	1882
2006-06-30	1890
2006-09-30	1922
2006-12-31	1847
2007-03-31	2265
2007-06-30	2648
2007-09-30	2920
2007-12-31	3118
2008-03-31	3667
2008-06-30	3493
2008-09-30	3488
2008-12-31	3061
2009-03-31	2515
2009-06-30	2964
2009-09-30	3589
2009-12-31	3630
2010-03-31	4191
2010-06-30	4198
2010-09-30	32172
2010-12-31	43241
2011-03-31	47009
2011-06-30	46631
2011-09-30	52562
2011-12-31	44469
2012-03-31	45982
2012-06-30	44016
2012-09-30	40750
2012-12-31	45650
2013-03-31	97306
2013-06-30	90818
2013-09-30	85632
2013-12-31	78227
2014-03-31	76577
2014-06-30	68872
2014-09-30	64426
2014-12-31	64222
2015-03-31	67824
2015-06-30	62024
2015-09-30	59758
2015-12-31	56171
2016-03-31	56334
2016-06-30	57631
2016-09-30	50664
2016-12-31	51260
2017-03-31	50646
2017-06-30	49815
2017-09-30	49203
2017-12-31	44083
2018-03-31	38683
2018-06-30	44250
2018-09-30	45994
2018-12-31	45731
2019-03-31	49394
2019-06-30	47041
2019-09-30	47676
2019-12-31	46157
2020-03-31	46768
2020-06-30	35802
2020-09-30	34591
2020-12-31	29880
2021-03-31	31055
2021-06-30	31064
2021-09-30	30321
2021-12-31	29230
2022-03-31	32173
2022-06-30	29431
2022-09-30	33143
2022-12-31	30152
2023-03-31	31547
2023-06-30	27731
2023-09-30	28171