Quarter	US dollars
2004-12-31	278
2005-03-31	321
2005-06-30	276
2005-09-30	138
2005-12-31	149
2006-03-31	236
2006-06-30	314
2006-09-30	308
2006-12-31	286
2007-03-31	184
2007-06-30	484
2007-09-30	481
2007-12-31	792
2008-03-31	1091
2008-06-30	1304
2008-09-30	1467
2008-12-31	1324
2009-03-31	1126
2009-06-30	1126
2009-09-30	1265
2009-12-31	1218
2010-03-31	1326
2010-06-30	1315
2010-09-30	1927
2010-12-31	2071
2011-03-31	2461
2011-06-30	2542
2011-09-30	2796
2011-12-31	2335
2012-03-31	2790
2012-06-30	3021
2012-09-30	2619
2012-12-31	2986
2013-03-31	2722
2013-06-30	2627
2013-09-30	2390
2013-12-31	1015
2014-03-31	1110
2014-06-30	1135
2014-09-30	1250
2014-12-31	1253
2015-03-31	999
2015-06-30	897
2015-09-30	1080
2015-12-31	1165
2016-03-31	1094
2016-06-30	979
2016-09-30	846
2016-12-31	717
2017-03-31	837
2017-06-30	746
2017-09-30	1075
2017-12-31	889
2018-03-31	984
2018-06-30	805
2018-09-30	678
2018-12-31	1108
2019-03-31	1033
2019-06-30	829
2019-09-30	908
2019-12-31	764
2020-03-31	832
2020-06-30	657
2020-09-30	576
2020-12-31	536
2021-03-31	559
2021-06-30	582
2021-09-30	578
2021-12-31	574
2022-03-31	537
2022-06-30	656
2022-09-30	539
2022-12-31	324
2023-03-31	768
2023-06-30	496
2023-09-30	480