Quarter	US dollars
2004-12-31	7144
2005-03-31	5346
2005-06-30	6725
2005-09-30	6831
2005-12-31	7376
2006-03-31	7373
2006-06-30	8844
2006-09-30	7163
2006-12-31	7362
2007-03-31	7586
2007-06-30	10899
2007-09-30	12927
2007-12-31	15242
2008-03-31	23369
2008-06-30	23360
2008-09-30	22392
2008-12-31	41453
2009-03-31	38427
2009-06-30	22168
2009-09-30	19395
2009-12-31	14562
2010-03-31	13958
2010-06-30	19931
2010-09-30	19119
2010-12-31	17349
2011-03-31	14648
2011-06-30	15022
2011-09-30	26403
2011-12-31	22567
2012-03-31	19981
2012-06-30	19074
2012-09-30	16065
2012-12-31	13819
2013-03-31	14056
2013-06-30	12793
2013-09-30	11090
2013-12-31	10895
2014-03-31	10419
2014-06-30	11508
2014-09-30	14260
2014-12-31	15911
2015-03-31	18945
2015-06-30	14617
2015-09-30	15588
2015-12-31	15604
2016-03-31	16338
2016-06-30	17083
2016-09-30	14936
2016-12-31	13340
2017-03-31	11688
2017-06-30	11808
2017-09-30	11569
2017-12-31	9037
2018-03-31	8455
2018-06-30	8280
2018-09-30	10094
2018-12-31	11801
2019-03-31	10816
2019-06-30	10144
2019-09-30	12241
2019-12-31	10683
2020-03-31	20298
2020-06-30	13065
2020-09-30	12110
2020-12-31	15773
2021-03-31	12187
2021-06-30	11012
2021-09-30	9048
2021-12-31	8539
2022-03-31	9515
2022-06-30	10918
2022-09-30	16849
2022-12-31	11490
2023-03-31	8080
2023-06-30	8334
2023-09-30	10804