Quarter	US dollars
2004-12-31	98084
2005-03-31	101662
2005-06-30	99186
2005-09-30	109137
2005-12-31	105513
2006-03-31	121712
2006-06-30	130855
2006-09-30	139648
2006-12-31	147661
2007-03-31	175272
2007-06-30	180265
2007-09-30	200311
2007-12-31	205513
2008-03-31	229395
2008-06-30	221118
2008-09-30	199495
2008-12-31	190440
2009-03-31	176331
2009-06-30	183342
2009-09-30	191849
2009-12-31	166788
2010-03-31	164028
2010-06-30	145464
2010-09-30	159650
2010-12-31	135242
2011-03-31	136627
2011-06-30	140850
2011-09-30	137089
2011-12-31	127887
2012-03-31	130819
2012-06-30	119438
2012-09-30	112363
2012-12-31	121975
2013-03-31	119974
2013-06-30	117021
2013-09-30	120537
2013-12-31	126829
2014-03-31	126105
2014-06-30	127980
2014-09-30	115760
2014-12-31	108113
2015-03-31	91769
2015-06-30	91021
2015-09-30	89385
2015-12-31	85703
2016-03-31	82947
2016-06-30	80841
2016-09-30	88087
2016-12-31	78984
2017-03-31	82304
2017-06-30	81641
2017-09-30	81885
2017-12-31	86511
2018-03-31	90156
2018-06-30	76700
2018-09-30	71978
2018-12-31	70106
2019-03-31	66357
2019-06-30	71758
2019-09-30	66986
2019-12-31	72432
2020-03-31	69317
2020-06-30	73699
2020-09-30	75888
2020-12-31	81833
2021-03-31	80907
2021-06-30	75613
2021-09-30	76564
2021-12-31	71462
2022-03-31	70402
2022-06-30	66285
2022-09-30	55502
2022-12-31	49392
2023-03-31	45353
2023-06-30	43957
2023-09-30	38841