Quarter	US dollars
2004-12-31	601
2005-03-31	720
2005-06-30	774
2005-09-30	699
2005-12-31	596
2006-03-31	376
2006-06-30	396
2006-09-30	385
2006-12-31	329
2007-03-31	412
2007-06-30	403
2007-09-30	446
2007-12-31	368
2008-03-31	282
2008-06-30	273
2008-09-30	241
2008-12-31	217
2009-03-31	199
2009-06-30	255
2009-09-30	264
2009-12-31	407
2010-03-31	314
2010-06-30	563
2010-09-30	641
2010-12-31	385
2011-03-31	592
2011-06-30	626
2011-09-30	684
2011-12-31	739
2012-03-31	636
2012-06-30	638
2012-09-30	635
2012-12-31	375
2013-03-31	386
2013-06-30	382
2013-09-30	324
2013-12-31	350
2014-03-31	432
2014-06-30	721
2014-09-30	663
2014-12-31	610
2015-03-31	588
2015-06-30	346
2015-09-30	367
2015-12-31	320
2016-03-31	325
2016-06-30	286
2016-09-30	285
2016-12-31	2784
2017-03-31	2788
2017-06-30	2808
2017-09-30	2825
2017-12-31	2791
2018-03-31	2756
2018-06-30	2712
2018-09-30	2754
2018-12-31	2860
2019-03-31	2822
2019-06-30	2857
2019-09-30	2963
2019-12-31	2897
2020-03-31	3174
2020-06-30	2986
2020-09-30	2145
2020-12-31	2075
2021-03-31	2392
2021-06-30	2403
2021-09-30	2540
2021-12-31	2500
2022-03-31	2099
2022-06-30	2032
2022-09-30	1903
2022-12-31	1862
2023-03-31	1891
2023-06-30	1921
2023-09-30	1830