Quarter	US dollars
2004-12-31	138872
2005-03-31	139534
2005-06-30	123026
2005-09-30	129903
2005-12-31	144960
2006-03-31	149641
2006-06-30	157791
2006-09-30	155137
2006-12-31	194451
2007-03-31	192464
2007-06-30	198636
2007-09-30	206230
2007-12-31	201911
2008-03-31	226941
2008-06-30	212153
2008-09-30	201429
2008-12-31	148784
2009-03-31	146524
2009-06-30	144729
2009-09-30	126492
2009-12-31	124386
2010-03-31	94500
2010-06-30	83905
2010-09-30	87207
2010-12-31	81600
2011-03-31	74204
2011-06-30	69786
2011-09-30	53995
2011-12-31	54953
2012-03-31	49162
2012-06-30	50743
2012-09-30	54035
2012-12-31	53537
2013-03-31	50396
2013-06-30	52309
2013-09-30	51226
2013-12-31	48900
2014-03-31	54352
2014-06-30	54811
2014-09-30	57947
2014-12-31	57618
2015-03-31	40860
2015-06-30	40244
2015-09-30	41088
2015-12-31	39242
2016-03-31	44769
2016-06-30	42053
2016-09-30	41502
2016-12-31	45373
2017-03-31	46427
2017-06-30	53847
2017-09-30	49875
2017-12-31	55099
2018-03-31	61495
2018-06-30	60189
2018-09-30	56936
2018-12-31	60440
2019-03-31	74915
2019-06-30	73894
2019-09-30	68271
2019-12-31	68843
2020-03-31	67630
2020-06-30	71061
2020-09-30	69594
2020-12-31	69783
2021-03-31	74854
2021-06-30	71873
2021-09-30	71104
2021-12-31	75964
2022-03-31	79504
2022-06-30	75396
2022-09-30	68645
2022-12-31	64301
2023-03-31	62290
2023-06-30	62811
2023-09-30	67547