Quarter	US dollars
2004-12-31	55328
2005-03-31	57737
2005-06-30	47159
2005-09-30	44169
2005-12-31	49702
2006-03-31	68324
2006-06-30	72837
2006-09-30	79335
2006-12-31	76018
2007-03-31	83942
2007-06-30	121070
2007-09-30	141728
2007-12-31	152190
2008-03-31	159912
2008-06-30	156454
2008-09-30	131947
2008-12-31	129066
2009-03-31	124740
2009-06-30	134277
2009-09-30	133764
2009-12-31	122168
2010-03-31	143181
2010-06-30	128136
2010-09-30	142033
2010-12-31	128072
2011-03-31	149598
2011-06-30	154664
2011-09-30	128022
2011-12-31	185905
2012-03-31	122098
2012-06-30	133180
2012-09-30	99625
2012-12-31	106961
2013-03-31	112845
2013-06-30	109588
2013-09-30	102165
2013-12-31	95312
2014-03-31	88038
2014-06-30	91324
2014-09-30	87764
2014-12-31	77998
2015-03-31	72116
2015-06-30	74719
2015-09-30	71836
2015-12-31	68772
2016-03-31	74595
2016-06-30	69584
2016-09-30	67093
2016-12-31	67535
2017-03-31	84629
2017-06-30	92148
2017-09-30	104323
2017-12-31	118806
2018-03-31	93507
2018-06-30	87787
2018-09-30	115757
2018-12-31	148063
2019-03-31	136405
2019-06-30	122750
2019-09-30	109535
2019-12-31	122589
2020-03-31	122235
2020-06-30	137551
2020-09-30	153438
2020-12-31	137489
2021-03-31	143852
2021-06-30	215273
2021-09-30	196243
2021-12-31	195682
2022-03-31	218975
2022-06-30	228251
2022-09-30	216501
2022-12-31	219128
2023-03-31	218577
2023-06-30	219662
2023-09-30	208544