Quarter	US dollars
2004-12-31	84731
2005-03-31	87348
2005-06-30	86841
2005-09-30	86063
2005-12-31	82955
2006-03-31	92600
2006-06-30	100483
2006-09-30	103409
2006-12-31	108860
2007-03-31	115228
2007-06-30	128612
2007-09-30	149814
2007-12-31	156005
2008-03-31	169733
2008-06-30	175378
2008-09-30	157377
2008-12-31	100324
2009-03-31	95065
2009-06-30	99322
2009-09-30	100612
2009-12-31	88633
2010-03-31	90042
2010-06-30	91991
2010-09-30	93186
2010-12-31	94932
2011-03-31	97491
2011-06-30	94133
2011-09-30	81274
2011-12-31	78315
2012-03-31	73522
2012-06-30	70749
2012-09-30	73975
2012-12-31	72924
2013-03-31	71923
2013-06-30	69231
2013-09-30	69003
2013-12-31	60663
2014-03-31	60888
2014-06-30	60843
2014-09-30	54002
2014-12-31	54803
2015-03-31	50279
2015-06-30	51173
2015-09-30	45597
2015-12-31	46840
2016-03-31	49772
2016-06-30	50094
2016-09-30	46768
2016-12-31	50884
2017-03-31	52309
2017-06-30	51692
2017-09-30	53896
2017-12-31	55692
2018-03-31	58233
2018-06-30	58248
2018-09-30	62209
2018-12-31	64211
2019-03-31	63890
2019-06-30	64479
2019-09-30	62173
2019-12-31	63625
2020-03-31	59490
2020-06-30	62810
2020-09-30	63675
2020-12-31	74241
2021-03-31	70607
2021-06-30	68668
2021-09-30	71417
2021-12-31	75777
2022-03-31	81356
2022-06-30	80614
2022-09-30	78894
2022-12-31	76702
2023-03-31	79714
2023-06-30	80780
2023-09-30	81428