Quarter	US dollars
2004-12-31	372
2005-03-31	376
2005-06-30	380
2005-09-30	490
2005-12-31	1018
2006-03-31	1258
2006-06-30	1452
2006-09-30	1756
2006-12-31	2867
2007-03-31	3248
2007-06-30	4099
2007-09-30	5012
2007-12-31	6470
2008-03-31	8212
2008-06-30	9580
2008-09-30	6995
2008-12-31	8046
2009-03-31	8493
2009-06-30	9512
2009-09-30	5516
2009-12-31	5133
2010-03-31	5020
2010-06-30	4843
2010-09-30	9519
2010-12-31	11677
2011-03-31	13082
2011-06-30	12912
2011-09-30	14415
2011-12-31	12899
2012-03-31	13675
2012-06-30	13219
2012-09-30	12238
2012-12-31	13880
2013-03-31	35388
2013-06-30	31173
2013-09-30	29744
2013-12-31	27628
2014-03-31	26023
2014-06-30	21149
2014-09-30	21217
2014-12-31	20520
2015-03-31	21452
2015-06-30	20462
2015-09-30	20015
2015-12-31	18032
2016-03-31	17744
2016-06-30	18451
2016-09-30	18161
2016-12-31	17400
2017-03-31	18253
2017-06-30	18026
2017-09-30	16272
2017-12-31	15366
2018-03-31	14535
2018-06-30	16043
2018-09-30	16666
2018-12-31	16443
2019-03-31	17859
2019-06-30	16903
2019-09-30	17164
2019-12-31	17354
2020-03-31	17282
2020-06-30	15354
2020-09-30	15223
2020-12-31	13672
2021-03-31	13848
2021-06-30	13418
2021-09-30	13199
2021-12-31	12453
2022-03-31	13848
2022-06-30	12513
2022-09-30	13636
2022-12-31	12082
2023-03-31	13058
2023-06-30	11515
2023-09-30	11897