Quarter	US dollars
1999-09-30	1439
1999-12-31	1412
2000-03-31	1511
2000-06-30	1360
2000-09-30	1626
2000-12-31	1532
2001-03-31	1634
2001-06-30	1694
2001-09-30	1832
2001-12-31	1863
2002-03-31	1816
2002-06-30	1854
2002-09-30	1785
2002-12-31	1869
2003-03-31	2014
2003-06-30	2545
2003-09-30	1952
2003-12-31	2378
2004-03-31	2737
2004-06-30	3205
2004-09-30	2868
2004-12-31	3899
2005-03-31	3541
2005-06-30	4200
2005-09-30	50922
2005-12-31	54760
2006-03-31	60638
2006-06-30	56357
2006-09-30	55174
2006-12-31	62890
2007-03-31	65111
2007-06-30	70156
2007-09-30	77869
2007-12-31	81472
2008-03-31	72367
2008-06-30	79596
2008-09-30	75226
2008-12-31	67237
2009-03-31	69214
2009-06-30	80896
2009-09-30	82645
2009-12-31	83461
2010-03-31	86267
2010-06-30	82216
2010-09-30	89287
2010-12-31	97161
2011-03-31	95226
2011-06-30	94596
2011-09-30	83483
2011-12-31	81153
2012-03-31	90344
2012-06-30	85129
2012-09-30	83897
2012-12-31	84444
2013-03-31	77751
2013-06-30	71596
2013-09-30	72217
2013-12-31	70646
2014-03-31	71891
2014-06-30	71804
2014-09-30	69986
2014-12-31	68902
2015-03-31	69300
2015-06-30	72486
2015-09-30	69644
2015-12-31	68570
2016-03-31	62484
2016-06-30	61669
2016-09-30	65760
2016-12-31	65532
2017-03-31	69464
2017-06-30	12887
2017-09-30	13800
2017-12-31	13909
2018-03-31	13932
2018-06-30	10745
2018-09-30	10728
2018-12-31	12286
2019-03-31	12507
2019-06-30	13754
2019-09-30	13020
2019-12-31	13556
2020-03-31	10484
2020-06-30	9306
2020-09-30	9352
2020-12-31	10331
2021-03-31	9494
2021-06-30	9977
2021-09-30	10005
2021-12-31	10125
2022-03-31	12072
2022-06-30	9756
2022-09-30	9266
2022-12-31	10706
2023-03-31	10070
2023-06-30	9760
2023-09-30	9279