Quarter	US dollars
2004-12-31	6729
2005-03-31	7520
2005-06-30	8928
2005-09-30	10369
2005-12-31	9699
2006-03-31	11061
2006-06-30	11986
2006-09-30	12844
2006-12-31	14652
2007-03-31	14894
2007-06-30	16475
2007-09-30	17473
2007-12-31	21458
2008-03-31	22999
2008-06-30	27057
2008-09-30	25224
2008-12-31	21728
2009-03-31	22236
2009-06-30	26546
2009-09-30	31006
2009-12-31	29795
2010-03-31	30197
2010-06-30	30407
2010-09-30	34960
2010-12-31	38627
2011-03-31	39389
2011-06-30	46553
2011-09-30	38969
2011-12-31	40571
2012-03-31	40285
2012-06-30	37541
2012-09-30	36734
2012-12-31	37528
2013-03-31	39050
2013-06-30	35259
2013-09-30	40205
2013-12-31	37986
2014-03-31	38280
2014-06-30	38603
2014-09-30	37443
2014-12-31	35692
2015-03-31	31189
2015-06-30	31596
2015-09-30	26160
2015-12-31	25309
2016-03-31	27074
2016-06-30	30039
2016-09-30	6179
2016-12-31	5929
2017-03-31	5257
2017-06-30	5153
2017-09-30	5519
2017-12-31	5627
2018-03-31	5567
2018-06-30	4496
2018-09-30	4049
2018-12-31	4017
2019-03-31	4089
2019-06-30	5500
2019-09-30	5256
2019-12-31	4845
2020-03-31	4398
2020-06-30	4705
2020-09-30	3592
2020-12-31	3588
2021-03-31	3021
2021-06-30	3323
2021-09-30	2973
2021-12-31	3763
2022-03-31	4998
2022-06-30	4542
2022-09-30	4505
2022-12-31	4069
2023-03-31	4679
2023-06-30	4269
2023-09-30	4145