Quarter	US dollars
2004-12-31	1572
2005-03-31	1340
2005-06-30	1226
2005-09-30	1217
2005-12-31	1097
2006-03-31	1093
2006-06-30	1320
2006-09-30	850
2006-12-31	568
2007-03-31	1240
2007-06-30	987
2007-09-30	1119
2007-12-31	1513
2008-03-31	1582
2008-06-30	1654
2008-09-30	1383
2008-12-31	1187
2009-03-31	810
2009-06-30	1711
2009-09-30	1478
2009-12-31	1513
2010-03-31	930
2010-06-30	699
2010-09-30	835
2010-12-31	665
2011-03-31	704
2011-06-30	458
2011-09-30	670
2011-12-31	659
2012-03-31	612
2012-06-30	795
2012-09-30	628
2012-12-31	501
2013-03-31	559
2013-06-30	450
2013-09-30	449
2013-12-31	625
2014-03-31	685
2014-06-30	598
2014-09-30	524
2014-12-31	471
2015-03-31	503
2015-06-30	477
2015-09-30	445
2015-12-31	431
2016-03-31	416
2016-06-30	423
2016-09-30	356
2016-12-31	118
2017-03-31	128
2017-06-30	51
2017-09-30	67
2017-12-31	122
2018-03-31	161
2018-06-30	118
2018-09-30	159
2018-12-31	140
2019-03-31	201
2019-06-30	289
2019-09-30	552
2019-12-31	346
2020-03-31	166
2020-06-30	245
2020-09-30	445
2020-12-31	783
2021-03-31	668
2021-06-30	420
2021-09-30	651
2021-12-31	621
2022-03-31	837
2022-06-30	678
2022-09-30	653
2022-12-31	1292
2023-03-31	1009
2023-06-30	914
2023-09-30	1609