Quarter	US dollars
2004-12-31	322449
2005-03-31	294214
2005-06-30	390068
2005-09-30	368538
2005-12-31	328659
2006-03-31	327714
2006-06-30	397409
2006-09-30	316901
2006-12-31	314466
2007-03-31	391479
2007-06-30	537224
2007-09-30	610749
2007-12-31	763867
2008-03-31	1254866
2008-06-30	1308341
2008-09-30	1208137
2008-12-31	2269733
2009-03-31	1693610
2009-06-30	1203541
2009-09-30	1199449
2009-12-31	983245
2010-03-31	967242
2010-06-30	1069409
2010-09-30	1245428
2010-12-31	1051160
2011-03-31	839709
2011-06-30	897474
2011-09-30	1238426
2011-12-31	1141441
2012-03-31	1069338
2012-06-30	1028137
2012-09-30	800496
2012-12-31	789763
2013-03-31	717070
2013-06-30	614427
2013-09-30	526925
2013-12-31	494169
2014-03-31	408408
2014-06-30	613618
2014-09-30	662901
2014-12-31	757534
2015-03-31	797257
2015-06-30	607647
2015-09-30	639049
2015-12-31	549543
2016-03-31	654987
2016-06-30	681710
2016-09-30	610955
2016-12-31	497336
2017-03-31	395050
2017-06-30	390136
2017-09-30	379555
2017-12-31	335006
2018-03-31	322960
2018-06-30	249494
2018-09-30	311722
2018-12-31	330849
2019-03-31	359046
2019-06-30	357370
2019-09-30	436073
2019-12-31	369791
2020-03-31	506501
2020-06-30	453776
2020-09-30	445714
2020-12-31	477854
2021-03-31	416930
2021-06-30	368475
2021-09-30	342322
2021-12-31	336081
2022-03-31	353102
2022-06-30	388914
2022-09-30	444590
2022-12-31	353893
2023-03-31	317848
2023-06-30	332394
2023-09-30	345058