Quarter	US dollars
2004-12-31	330
2005-03-31	308
2005-06-30	301
2005-09-30	331
2005-12-31	427
2006-03-31	446
2006-06-30	468
2006-09-30	389
2006-12-31	601
2007-03-31	659
2007-06-30	664
2007-09-30	1102
2007-12-31	1105
2008-03-31	773
2008-06-30	754
2008-09-30	731
2008-12-31	526
2009-03-31	513
2009-06-30	688
2009-09-30	477
2009-12-31	472
2010-03-31	394
2010-06-30	298
2010-09-30	1103
2010-12-31	2257
2011-03-31	2121
2011-06-30	2648
2011-09-30	4283
2011-12-31	3814
2012-03-31	5026
2012-06-30	4726
2012-09-30	4520
2012-12-31	5987
2013-03-31	12266
2013-06-30	12401
2013-09-30	12597
2013-12-31	10401
2014-03-31	9514
2014-06-30	9937
2014-09-30	8177
2014-12-31	6569
2015-03-31	5330
2015-06-30	5077
2015-09-30	4485
2015-12-31	4097
2016-03-31	4449
2016-06-30	3723
2016-09-30	3544
2016-12-31	3175
2017-03-31	2954
2017-06-30	2224
2017-09-30	1927
2017-12-31	1910
2018-03-31	1190
2018-06-30	1058
2018-09-30	1530
2018-12-31	951
2019-03-31	1109
2019-06-30	1088
2019-09-30	935
2019-12-31	939
2020-03-31	817
2020-06-30	823
2020-09-30	932
2020-12-31	924
2021-03-31	1018
2021-06-30	1024
2021-09-30	1130
2021-12-31	1263
2022-03-31	1557
2022-06-30	1472
2022-09-30	1575
2022-12-31	1634
2023-03-31	1644
2023-06-30	1537
2023-09-30	1323