Quarter	US dollars
2004-12-31	5097
2005-03-31	5388
2005-06-30	4781
2005-09-30	5190
2005-12-31	4111
2006-03-31	4267
2006-06-30	5071
2006-09-30	6623
2006-12-31	6180
2007-03-31	8536
2007-06-30	10044
2007-09-30	12929
2007-12-31	13044
2008-03-31	21203
2008-06-30	19509
2008-09-30	16969
2008-12-31	10029
2009-03-31	12345
2009-06-30	11157
2009-09-30	9871
2009-12-31	10241
2010-03-31	9200
2010-06-30	9444
2010-09-30	7903
2010-12-31	10393
2011-03-31	9983
2011-06-30	22061
2011-09-30	22685
2011-12-31	15197
2012-03-31	14687
2012-06-30	13606
2012-09-30	12611
2012-12-31	13504
2013-03-31	15216
2013-06-30	16546
2013-09-30	17583
2013-12-31	19392
2014-03-31	17155
2014-06-30	16856
2014-09-30	16489
2014-12-31	15216
2015-03-31	11416
2015-06-30	12542
2015-09-30	12101
2015-12-31	9409
2016-03-31	10356
2016-06-30	7276
2016-09-30	6551
2016-12-31	6219
2017-03-31	5596
2017-06-30	11470
2017-09-30	10112
2017-12-31	11000
2018-03-31	10146
2018-06-30	9580
2018-09-30	10315
2018-12-31	10808
2019-03-31	10953
2019-06-30	11095
2019-09-30	11577
2019-12-31	10884
2020-03-31	11686
2020-06-30	11844
2020-09-30	10331
2020-12-31	9180
2021-03-31	12627
2021-06-30	12282
2021-09-30	12837
2021-12-31	13000
2022-03-31	14368
2022-06-30	11884
2022-09-30	13346
2022-12-31	11531
2023-03-31	10782
2023-06-30	11483
2023-09-30	12531