Quarter	US dollars
2004-12-31	55076
2005-03-31	49351
2005-06-30	66866
2005-09-30	61629
2005-12-31	55300
2006-03-31	49470
2006-06-30	56407
2006-09-30	46636
2006-12-31	45788
2007-03-31	61040
2007-06-30	85358
2007-09-30	91608
2007-12-31	103835
2008-03-31	185297
2008-06-30	201581
2008-09-30	195306
2008-12-31	283873
2009-03-31	242684
2009-06-30	186082
2009-09-30	187819
2009-12-31	154575
2010-03-31	158384
2010-06-30	186611
2010-09-30	206400
2010-12-31	162912
2011-03-31	130406
2011-06-30	145758
2011-09-30	210896
2011-12-31	201713
2012-03-31	191994
2012-06-30	187307
2012-09-30	135372
2012-12-31	132909
2013-03-31	121263
2013-06-30	99715
2013-09-30	94735
2013-12-31	87109
2014-03-31	91625
2014-06-30	105516
2014-09-30	112785
2014-12-31	124318
2015-03-31	132367
2015-06-30	101199
2015-09-30	103975
2015-12-31	91555
2016-03-31	106488
2016-06-30	108536
2016-09-30	101823
2016-12-31	82312
2017-03-31	75919
2017-06-30	71318
2017-09-30	70117
2017-12-31	62716
2018-03-31	63501
2018-06-30	40397
2018-09-30	58064
2018-12-31	65176
2019-03-31	75084
2019-06-30	73791
2019-09-30	97353
2019-12-31	75482
2020-03-31	94071
2020-06-30	93073
2020-09-30	92537
2020-12-31	97796
2021-03-31	79110
2021-06-30	72812
2021-09-30	69792
2021-12-31	59032
2022-03-31	53055
2022-06-30	50934
2022-09-30	52014
2022-12-31	41251
2023-03-31	36841
2023-06-30	36505
2023-09-30	36578