Quarter	US dollars
2004-12-31	25752
2005-03-31	27205
2005-06-30	28390
2005-09-30	78618
2005-12-31	82357
2006-03-31	92855
2006-06-30	87203
2006-09-30	86819
2006-12-31	95582
2007-03-31	107411
2007-06-30	115902
2007-09-30	133578
2007-12-31	144772
2008-03-31	145380
2008-06-30	153590
2008-09-30	149864
2008-12-31	135327
2009-03-31	139342
2009-06-30	150634
2009-09-30	150075
2009-12-31	151316
2010-03-31	158324
2010-06-30	157972
2010-09-30	169483
2010-12-31	179954
2011-03-31	176070
2011-06-30	177541
2011-09-30	165041
2011-12-31	163067
2012-03-31	168184
2012-06-30	164899
2012-09-30	165689
2012-12-31	165573
2013-03-31	160888
2013-06-30	156398
2013-09-30	155728
2013-12-31	153674
2014-03-31	160973
2014-06-30	159901
2014-09-30	158257
2014-12-31	155693
2015-03-31	153643
2015-06-30	155363
2015-09-30	148498
2015-12-31	145105
2016-03-31	136523
2016-06-30	136092
2016-09-30	140799
2016-12-31	135847
2017-03-31	141182
2017-06-30	80178
2017-09-30	75990
2017-12-31	77905
2018-03-31	82309
2018-06-30	78789
2018-09-30	78858
2018-12-31	80445
2019-03-31	81813
2019-06-30	81836
2019-09-30	79086
2019-12-31	81450
2020-03-31	80868
2020-06-30	83616
2020-09-30	81346
2020-12-31	84703
2021-03-31	79815
2021-06-30	80487
2021-09-30	83231
2021-12-31	84219
2022-03-31	85048
2022-06-30	80021
2022-09-30	76505
2022-12-31	79214
2023-03-31	79246
2023-06-30	76676
2023-09-30	73585