Quarter	US dollars
2004-12-31	15127
2005-03-31	20254
2005-06-30	59855
2005-09-30	65122
2005-12-31	67989
2006-03-31	73600
2006-06-30	75126
2006-09-30	75335
2006-12-31	74497
2007-03-31	76179
2007-06-30	77581
2007-09-30	81787
2007-12-31	87337
2008-03-31	93784
2008-06-30	88677
2008-09-30	84231
2008-12-31	72708
2009-03-31	70948
2009-06-30	74808
2009-09-30	80696
2009-12-31	83232
2010-03-31	91548
2010-06-30	92167
2010-09-30	100426
2010-12-31	92476
2011-03-31	97554
2011-06-30	100408
2011-09-30	93413
2011-12-31	91647
2012-03-31	97423
2012-06-30	92242
2012-09-30	89588
2012-12-31	91100
2013-03-31	86275
2013-06-30	77153
2013-09-30	79644
2013-12-31	74950
2014-03-31	74427
2014-06-30	79205
2014-09-30	80501
2014-12-31	74010
2015-03-31	72814
2015-06-30	70788
2015-09-30	66824
2015-12-31	65201
2016-03-31	66442
2016-06-30	65011
2016-09-30	67377
2016-12-31	61655
2017-03-31	72394
2017-06-30	75133
2017-09-30	74605
2017-12-31	80857
2018-03-31	81787
2018-06-30	77985
2018-09-30	79324
2018-12-31	80772
2019-03-31	79450
2019-06-30	81600
2019-09-30	81104
2019-12-31	84364
2020-03-31	88396
2020-06-30	88413
2020-09-30	89037
2020-12-31	99328
2021-03-31	97178
2021-06-30	100969
2021-09-30	98034
2021-12-31	102029
2022-03-31	101561
2022-06-30	96327
2022-09-30	88989
2022-12-31	101445
2023-03-31	99675
2023-06-30	94974
2023-09-30	86901