Quarter	US dollars
2004-12-31	19
2005-03-31	21
2005-06-30	29
2005-09-30	34
2005-12-31	36
2006-03-31	47
2006-06-30	57
2006-09-30	73
2006-12-31	84
2007-03-31	102
2007-06-30	116
2007-09-30	137
2007-12-31	173
2008-03-31	197
2008-06-30	213
2008-09-30	239
2008-12-31	243
2009-03-31	225
2009-06-30	212
2009-09-30	194
2009-12-31	189
2010-03-31	188
2010-06-30	209
2010-09-30	244
2010-12-31	268
2011-03-31	279
2011-06-30	334
2011-09-30	365
2011-12-31	320
2012-03-31	326
2012-06-30	342
2012-09-30	371
2012-12-31	364
2013-03-31	369
2013-06-30	375
2013-09-30	364
2013-12-31	418
2014-03-31	427
2014-06-30	450
2014-09-30	493
2014-12-31	503
2015-03-31	496
2015-06-30	506
2015-09-30	521
2015-12-31	520
2016-03-31	508
2016-06-30	501
2016-09-30	521
2016-12-31	464
2017-03-31	473
2017-06-30	460
2017-09-30	470
2017-12-31	436
2018-03-31	413
2018-06-30	376
2018-09-30	408
2018-12-31	392
2019-03-31	400
2019-06-30	384
2019-09-30	397
2019-12-31	395
2020-03-31	433
2020-06-30	439
2020-09-30	454
2020-12-31	444
2021-03-31	428
2021-06-30	474
2021-09-30	473
2021-12-31	477
2022-03-31	496
2022-06-30	530
2022-09-30	534
2022-12-31	555
2023-03-31	594
2023-06-30	600
2023-09-30	596