Quarter	US dollars
2004-12-31	11802
2005-03-31	12809
2005-06-30	9672
2005-09-30	14647
2005-12-31	14303
2006-03-31	16256
2006-06-30	17094
2006-09-30	17090
2006-12-31	23392
2007-03-31	27595
2007-06-30	30798
2007-09-30	33697
2007-12-31	39482
2008-03-31	43546
2008-06-30	44741
2008-09-30	46855
2008-12-31	42349
2009-03-31	40752
2009-06-30	37013
2009-09-30	41391
2009-12-31	41181
2010-03-31	43651
2010-06-30	58590
2010-09-30	62101
2010-12-31	60838
2011-03-31	62610
2011-06-30	64192
2011-09-30	63056
2011-12-31	59055
2012-03-31	60037
2012-06-30	60054
2012-09-30	59703
2012-12-31	58430
2013-03-31	60548
2013-06-30	57086
2013-09-30	54378
2013-12-31	55418
2014-03-31	55639
2014-06-30	53994
2014-09-30	52710
2014-12-31	50738
2015-03-31	52876
2015-06-30	51138
2015-09-30	47628
2015-12-31	45966
2016-03-31	47529
2016-06-30	47034
2016-09-30	43476
2016-12-31	34595
2017-03-31	37585
2017-06-30	48086
2017-09-30	46590
2017-12-31	47546
2018-03-31	42785
2018-06-30	40562
2018-09-30	37535
2018-12-31	41997
2019-03-31	43343
2019-06-30	44338
2019-09-30	43576
2019-12-31	41062
2020-03-31	41494
2020-06-30	40531
2020-09-30	39987
2020-12-31	41352
2021-03-31	38645
2021-06-30	39170
2021-09-30	40103
2021-12-31	43525
2022-03-31	43210
2022-06-30	45827
2022-09-30	46098
2022-12-31	44062
2023-03-31	42809
2023-06-30	45616
2023-09-30	45155