Quarter	US dollars
2004-12-31	163
2005-03-31	225
2005-06-30	206
2005-09-30	230
2005-12-31	328
2006-03-31	199
2006-06-30	274
2006-09-30	286
2006-12-31	225
2007-03-31	188
2007-06-30	243
2007-09-30	224
2007-12-31	247
2008-03-31	254
2008-06-30	221
2008-09-30	249
2008-12-31	208
2009-03-31	181
2009-06-30	189
2009-09-30	222
2009-12-31	221
2010-03-31	223
2010-06-30	109
2010-09-30	124
2010-12-31	387
2011-03-31	344
2011-06-30	399
2011-09-30	411
2011-12-31	407
2012-03-31	887
2012-06-30	924
2012-09-30	893
2012-12-31	1166
2013-03-31	3350
2013-06-30	3532
2013-09-30	4599
2013-12-31	4030
2014-03-31	3821
2014-06-30	3553
2014-09-30	3515
2014-12-31	3178
2015-03-31	3351
2015-06-30	3204
2015-09-30	3163
2015-12-31	3022
2016-03-31	2896
2016-06-30	2782
2016-09-30	2664
2016-12-31	2554
2017-03-31	2314
2017-06-30	2221
2017-09-30	2012
2017-12-31	1924
2018-03-31	1931
2018-06-30	2107
2018-09-30	1733
2018-12-31	1826
2019-03-31	1892
2019-06-30	2019
2019-09-30	2035
2019-12-31	1925
2020-03-31	1810
2020-06-30	1724
2020-09-30	1685
2020-12-31	1616
2021-03-31	1449
2021-06-30	1198
2021-09-30	1204
2021-12-31	999
2022-03-31	1003
2022-06-30	914
2022-09-30	898
2022-12-31	897
2023-03-31	950
2023-06-30	955
2023-09-30	1027