Quarter	US dollars
2004-12-31	8
2005-03-31	9
2005-06-30	11
2005-09-30	4
2005-12-31	2
2006-03-31	102
2006-06-30	80
2006-09-30	103
2006-12-31	205
2007-03-31	435
2007-06-30	315
2007-09-30	389
2007-12-31	388
2008-03-31	161
2008-06-30	175
2008-09-30	196
2008-12-31	150
2009-03-31	161
2009-06-30	152
2009-09-30	286
2009-12-31	302
2010-03-31	262
2010-06-30	302
2010-09-30	336
2010-12-31	344
2011-03-31	438
2011-06-30	391
2011-09-30	805
2011-12-31	832
2012-03-31	1985
2012-06-30	2187
2012-09-30	2080
2012-12-31	2399
2013-03-31	2519
2013-06-30	2638
2013-09-30	2499
2013-12-31	2256
2014-03-31	2216
2014-06-30	2089
2014-09-30	1855
2014-12-31	1692
2015-03-31	1655
2015-06-30	1579
2015-09-30	1498
2015-12-31	1411
2016-03-31	1372
2016-06-30	1183
2016-09-30	1007
2016-12-31	748
2017-03-31	625
2017-06-30	529
2017-09-30	490
2017-12-31	434
2018-03-31	362
2018-06-30	304
2018-09-30	322
2018-12-31	349
2019-03-31	301
2019-06-30	257
2019-09-30	259
2019-12-31	242
2020-03-31	195
2020-06-30	171
2020-09-30	265
2020-12-31	347
2021-03-31	226
2021-06-30	307
2021-09-30	364
2021-12-31	493
2022-03-31	491
2022-06-30	433
2022-09-30	413
2022-12-31	519
2023-03-31	505
2023-06-30	479
2023-09-30	525