Quarter	US dollars
2004-12-31	422
2005-03-31	471
2005-06-30	466
2005-09-30	474
2005-12-31	467
2006-03-31	258
2006-06-30	281
2006-09-30	291
2006-12-31	299
2007-03-31	247
2007-06-30	263
2007-09-30	328
2007-12-31	271
2008-03-31	199
2008-06-30	183
2008-09-30	160
2008-12-31	151
2009-03-31	133
2009-06-30	173
2009-09-30	178
2009-12-31	287
2010-03-31	252
2010-06-30	434
2010-09-30	567
2010-12-31	337
2011-03-31	524
2011-06-30	591
2011-09-30	670
2011-12-31	679
2012-03-31	569
2012-06-30	566
2012-09-30	499
2012-12-31	297
2013-03-31	304
2013-06-30	309
2013-09-30	293
2013-12-31	322
2014-03-31	357
2014-06-30	641
2014-09-30	623
2014-12-31	606
2015-03-31	585
2015-06-30	285
2015-09-30	268
2015-12-31	283
2016-03-31	283
2016-06-30	281
2016-09-30	281
2016-12-31	2757
2017-03-31	2772
2017-06-30	2807
2017-09-30	2815
2017-12-31	2788
2018-03-31	2593
2018-06-30	2588
2018-09-30	2616
2018-12-31	2624
2019-03-31	2584
2019-06-30	2602
2019-09-30	2576
2019-12-31	2609
2020-03-31	2669
2020-06-30	2663
2020-09-30	1846
2020-12-31	1875
2021-03-31	1981
2021-06-30	1990
2021-09-30	1992
2021-12-31	1964
2022-03-31	1541
2022-06-30	1529
2022-09-30	1498
2022-12-31	1504
2023-03-31	1508
2023-06-30	1510
2023-09-30	1421