Quarter	US dollars
2004-12-31	18542
2005-03-31	21004
2005-06-30	158158
2005-09-30	209511
2005-12-31	203136
2006-03-31	251215
2006-06-30	317104
2006-09-30	380196
2006-12-31	412230
2007-03-31	464312
2007-06-30	527254
2007-09-30	619148
2007-12-31	652079
2008-03-31	706151
2008-06-30	667778
2008-09-30	582779
2008-12-31	485590
2009-03-31	483827
2009-06-30	433196
2009-09-30	317490
2009-12-31	266445
2010-03-31	263058
2010-06-30	270206
2010-09-30	291208
2010-12-31	363614
2011-03-31	353907
2011-06-30	345689
2011-09-30	323947
2011-12-31	308602
2012-03-31	183674
2012-06-30	223544
2012-09-30	215334
2012-12-31	183927
2013-03-31	630561
2013-06-30	594574
2013-09-30	578375
2013-12-31	519097
2014-03-31	426725
2014-06-30	391494
2014-09-30	389347
2014-12-31	321963
2015-03-31	322801
2015-06-30	294843
2015-09-30	286068
2015-12-31	247511
2016-03-31	247097
2016-06-30	226534
2016-09-30	221589
2016-12-31	181821
2017-03-31	182371
2017-06-30	181453
2017-09-30	156052
2017-12-31	127632
2018-03-31	147760
2018-06-30	114182
2018-09-30	110392
2018-12-31	112615
2019-03-31	121802
2019-06-30	193505
2019-09-30	178986
2019-12-31	199368
2020-03-31	199224
2020-06-30	170677
2020-09-30	183295
2020-12-31	170602
2021-03-31	197422
2021-06-30	203369
2021-09-30	259404
2021-12-31	287712
2022-03-31	372966
2022-06-30	312510
2022-09-30	334960
2022-12-31	333596
2023-03-31	384802
2023-06-30	389433
2023-09-30	383278