Quarter	US dollars
2004-12-31	11986
2005-03-31	14736
2005-06-30	14222
2005-09-30	17674
2005-12-31	21972
2006-03-31	26250
2006-06-30	33461
2006-09-30	37144
2006-12-31	42999
2007-03-31	53255
2007-06-30	63163
2007-09-30	76337
2007-12-31	84703
2008-03-31	89976
2008-06-30	100253
2008-09-30	76342
2008-12-31	71718
2009-03-31	65882
2009-06-30	68433
2009-09-30	52699
2009-12-31	53791
2010-03-31	55103
2010-06-30	61426
2010-09-30	80247
2010-12-31	107563
2011-03-31	107464
2011-06-30	106983
2011-09-30	126478
2011-12-31	117878
2012-03-31	169116
2012-06-30	166188
2012-09-30	157475
2012-12-31	183201
2013-03-31	318883
2013-06-30	317034
2013-09-30	297485
2013-12-31	253682
2014-03-31	256746
2014-06-30	232731
2014-09-30	234708
2014-12-31	221930
2015-03-31	225100
2015-06-30	227757
2015-09-30	220537
2015-12-31	202447
2016-03-31	211279
2016-06-30	206688
2016-09-30	196106
2016-12-31	188518
2017-03-31	188613
2017-06-30	168005
2017-09-30	166790
2017-12-31	159979
2018-03-31	151377
2018-06-30	161095
2018-09-30	155391
2018-12-31	162793
2019-03-31	173124
2019-06-30	177352
2019-09-30	186209
2019-12-31	183219
2020-03-31	194772
2020-06-30	176014
2020-09-30	173609
2020-12-31	156448
2021-03-31	158778
2021-06-30	152754
2021-09-30	150032
2021-12-31	146050
2022-03-31	155135
2022-06-30	148001
2022-09-30	145488
2022-12-31	139557
2023-03-31	141326
2023-06-30	126884
2023-09-30	129497