Quarter	US dollars
2004-12-31	2164
2005-03-31	2378
2005-06-30	2868
2005-09-30	3382
2005-12-31	3150
2006-03-31	3348
2006-06-30	3397
2006-09-30	3413
2006-12-31	3611
2007-03-31	3899
2007-06-30	4256
2007-09-30	4246
2007-12-31	4460
2008-03-31	4299
2008-06-30	4279
2008-09-30	4530
2008-12-31	4376
2009-03-31	3811
2009-06-30	4455
2009-09-30	4245
2009-12-31	4182
2010-03-31	4529
2010-06-30	4505
2010-09-30	4934
2010-12-31	4801
2011-03-31	1954
2011-06-30	1785
2011-09-30	1765
2011-12-31	1707
2012-03-31	1673
2012-06-30	1219
2012-09-30	1421
2012-12-31	1418
2013-03-31	1184
2013-06-30	1118
2013-09-30	1454
2013-12-31	1144
2014-03-31	947
2014-06-30	855
2014-09-30	1060
2014-12-31	1043
2015-03-31	1307
2015-06-30	1173
2015-09-30	956
2015-12-31	1116
2016-03-31	894
2016-06-30	915
2016-09-30	925
2016-12-31	773
2017-03-31	797
2017-06-30	1495
2017-09-30	1297
2017-12-31	1209
2018-03-31	1350
2018-06-30	1130
2018-09-30	1179
2018-12-31	1165
2019-03-31	894
2019-06-30	1028
2019-09-30	1030
2019-12-31	935
2020-03-31	1170
2020-06-30	1516
2020-09-30	1709
2020-12-31	2439
2021-03-31	1558
2021-06-30	1340
2021-09-30	1242
2021-12-31	1368
2022-03-31	1291
2022-06-30	1117
2022-09-30	1151
2022-12-31	1551
2023-03-31	1245
2023-06-30	2068
2023-09-30	1772