Quarter	US dollars
2004-12-31	411
2005-03-31	467
2005-06-30	439
2005-09-30	610
2005-12-31	668
2006-03-31	434
2006-06-30	594
2006-09-30	587
2006-12-31	658
2007-03-31	492
2007-06-30	664
2007-09-30	923
2007-12-31	792
2008-03-31	906
2008-06-30	1015
2008-09-30	1167
2008-12-31	1357
2009-03-31	1433
2009-06-30	1736
2009-09-30	1414
2009-12-31	1398
2010-03-31	1204
2010-06-30	1517
2010-09-30	1609
2010-12-31	1584
2011-03-31	1276
2011-06-30	1366
2011-09-30	1530
2011-12-31	1347
2012-03-31	1555
2012-06-30	1264
2012-09-30	1360
2012-12-31	1091
2013-03-31	996
2013-06-30	1194
2013-09-30	1270
2013-12-31	1195
2014-03-31	1154
2014-06-30	1217
2014-09-30	1318
2014-12-31	1138
2015-03-31	1060
2015-06-30	1120
2015-09-30	1213
2015-12-31	1513
2016-03-31	1921
2016-06-30	2196
2016-09-30	1308
2016-12-31	1570
2017-03-31	1535
2017-06-30	1450
2017-09-30	2151
2017-12-31	2186
2018-03-31	2682
2018-06-30	2778
2018-09-30	3067
2018-12-31	3173
2019-03-31	2596
2019-06-30	2697
2019-09-30	1506
2019-12-31	1325
2020-03-31	1230
2020-06-30	920
2020-09-30	1075
2020-12-31	931
2021-03-31	861
2021-06-30	864
2021-09-30	975
2021-12-31	907
2022-03-31	1150
2022-06-30	1209
2022-09-30	1261
2022-12-31	1291
2023-03-31	1272
2023-06-30	1101
2023-09-30	957