Quarter	US dollars
2004-12-31	787282
2005-03-31	852306
2005-06-30	816369
2005-09-30	899536
2005-12-31	801860
2006-03-31	936082
2006-06-30	966783
2006-09-30	1039124
2006-12-31	1070435
2007-03-31	1228754
2007-06-30	1287256
2007-09-30	1422743
2007-12-31	1359657
2008-03-31	1549970
2008-06-30	1418115
2008-09-30	1340661
2008-12-31	1189321
2009-03-31	1112494
2009-06-30	1163530
2009-09-30	1194005
2009-12-31	1084689
2010-03-31	1138866
2010-06-30	1103807
2010-09-30	1217376
2010-12-31	1088322
2011-03-31	1174388
2011-06-30	1162960
2011-09-30	1184077
2011-12-31	1100129
2012-03-31	1253001
2012-06-30	1172690
2012-09-30	1126385
2012-12-31	1147414
2013-03-31	1065891
2013-06-30	1038014
2013-09-30	1027417
2013-12-31	988766
2014-03-31	982705
2014-06-30	944361
2014-09-30	870562
2014-12-31	813441
2015-03-31	751053
2015-06-30	736834
2015-09-30	728559
2015-12-31	697548
2016-03-31	720322
2016-06-30	734813
2016-09-30	725793
2016-12-31	667113
2017-03-31	730978
2017-06-30	801541
2017-09-30	798817
2017-12-31	820373
2018-03-31	832616
2018-06-30	799735
2018-09-30	795865
2018-12-31	736221
2019-03-31	769749
2019-06-30	771597
2019-09-30	764961
2019-12-31	751702
2020-03-31	795081
2020-06-30	833049
2020-09-30	908406
2020-12-31	961992
2021-03-31	952474
2021-06-30	941556
2021-09-30	909490
2021-12-31	889017
2022-03-31	931416
2022-06-30	871189
2022-09-30	831260
2022-12-31	874131
2023-03-31	910179
2023-06-30	947638
2023-09-30	935931