Quarter	US dollars
2004-12-31	403
2005-03-31	301
2005-06-30	389
2005-09-30	363
2005-12-31	353
2006-03-31	671
2006-06-30	553
2006-09-30	342
2006-12-31	386
2007-03-31	675
2007-06-30	1282
2007-09-30	1320
2007-12-31	1308
2008-03-31	1514
2008-06-30	1459
2008-09-30	1836
2008-12-31	1903
2009-03-31	1958
2009-06-30	1863
2009-09-30	1679
2009-12-31	1520
2010-03-31	1207
2010-06-30	1175
2010-09-30	1180
2010-12-31	1155
2011-03-31	1003
2011-06-30	1024
2011-09-30	1214
2011-12-31	1190
2012-03-31	1226
2012-06-30	1352
2012-09-30	1473
2012-12-31	1772
2013-03-31	2594
2013-06-30	1495
2013-09-30	1124
2013-12-31	993
2014-03-31	887
2014-06-30	872
2014-09-30	897
2014-12-31	785
2015-03-31	759
2015-06-30	643
2015-09-30	582
2015-12-31	553
2016-03-31	510
2016-06-30	553
2016-09-30	611
2016-12-31	538
2017-03-31	534
2017-06-30	364
2017-09-30	356
2017-12-31	304
2018-03-31	292
2018-06-30	264
2018-09-30	196
2018-12-31	190
2019-03-31	212
2019-06-30	195
2019-09-30	165
2019-12-31	210
2020-03-31	226
2020-06-30	253
2020-09-30	229
2020-12-31	160
2021-03-31	110
2021-06-30	105
2021-09-30	90
2021-12-31	216
2022-03-31	211
2022-06-30	161
2022-09-30	103
2022-12-31	118
2023-03-31	81
2023-06-30	48
2023-09-30	128