Quarter	US dollars
1999-09-30	5141
1999-12-31	5302
2000-03-31	5669
2000-06-30	5466
2000-09-30	5805
2000-12-31	6524
2001-03-31	7110
2001-06-30	6563
2001-09-30	6459
2001-12-31	5753
2002-03-31	5340
2002-06-30	5131
2002-09-30	5073
2002-12-31	24268
2003-03-31	22080
2003-06-30	22101
2003-09-30	22245
2003-12-31	21896
2004-03-31	20801
2004-06-30	20197
2004-09-30	20756
2004-12-31	22284
2005-03-31	22874
2005-06-30	25486
2005-09-30	24516
2005-12-31	26994
2006-03-31	27247
2006-06-30	28442
2006-09-30	28703
2006-12-31	30827
2007-03-31	29690
2007-06-30	30953
2007-09-30	33719
2007-12-31	35074
2008-03-31	36755
2008-06-30	37181
2008-09-30	35134
2008-12-31	29797
2009-03-31	28368
2009-06-30	29529
2009-09-30	27367
2009-12-31	27621
2010-03-31	33844
2010-06-30	34321
2010-09-30	37007
2010-12-31	38358
2011-03-31	45458
2011-06-30	50530
2011-09-30	45008
2011-12-31	43575
2012-03-31	50407
2012-06-30	45665
2012-09-30	46918
2012-12-31	50218
2013-03-31	42205
2013-06-30	39595
2013-09-30	38446
2013-12-31	43136
2014-03-31	42019
2014-06-30	44406
2014-09-30	42414
2014-12-31	43229
2015-03-31	41417
2015-06-30	36578
2015-09-30	32521
2015-12-31	33704
2016-03-31	35716
2016-06-30	30525
2016-09-30	31627
2016-12-31	27431
2017-03-31	30294
2017-06-30	31218
2017-09-30	31876
2017-12-31	31792
2018-03-31	35182
2018-06-30	32836
2018-09-30	36065
2018-12-31	35896
2019-03-31	39189
2019-06-30	39340
2019-09-30	36465
2019-12-31	37257
2020-03-31	31296
2020-06-30	32561
2020-09-30	30442
2020-12-31	33500
2021-03-31	31699
2021-06-30	33677
2021-09-30	32546
2021-12-31	31953
2022-03-31	34286
2022-06-30	34012
2022-09-30	35107
2022-12-31	36047
2023-03-31	38983
2023-06-30	41612
2023-09-30	43129