Quarter	US dollars
2004-12-31	13
2005-03-31	13
2005-06-30	14
2005-09-30	14
2005-12-31	21
2006-03-31	135
2006-06-30	168
2006-09-30	62
2006-12-31	321
2007-03-31	492
2007-06-30	472
2007-09-30	636
2007-12-31	591
2008-03-31	785
2008-06-30	878
2008-09-30	846
2008-12-31	891
2009-03-31	744
2009-06-30	606
2009-09-30	705
2009-12-31	491
2010-03-31	352
2010-06-30	480
2010-09-30	690
2010-12-31	869
2011-03-31	701
2011-06-30	689
2011-09-30	681
2011-12-31	635
2012-03-31	644
2012-06-30	638
2012-09-30	460
2012-12-31	446
2013-03-31	632
2013-06-30	607
2013-09-30	567
2013-12-31	306
2014-03-31	262
2014-06-30	244
2014-09-30	298
2014-12-31	407
2015-03-31	1492
2015-06-30	379
2015-09-30	268
2015-12-31	277
2016-03-31	233
2016-06-30	247
2016-09-30	188
2016-12-31	161
2017-03-31	160
2017-06-30	282
2017-09-30	280
2017-12-31	272
2018-03-31	288
2018-06-30	283
2018-09-30	278
2018-12-31	208
2019-03-31	94
2019-06-30	386
2019-09-30	196
2019-12-31	388
2020-03-31	398
2020-06-30	1313
2020-09-30	1299
2020-12-31	1321
2021-03-31	1636
2021-06-30	1599
2021-09-30	1830
2021-12-31	1726
2022-03-31	1425
2022-06-30	1472
2022-09-30	1242
2022-12-31	1159
2023-03-31	1152
2023-06-30	1109
2023-09-30	1100