Quarter	US dollars
1999-03-31	34
1999-06-30	46
1999-09-30	57
1999-12-31	87
2000-03-31	161
2000-06-30	116
2000-09-30	133
2000-12-31	104
2001-03-31	56
2001-06-30	72
2001-09-30	212
2001-12-31	207
2002-03-31	156
2002-06-30	173
2002-09-30	184
2002-12-31	228
2003-03-31	178
2003-06-30	85
2003-09-30	192
2003-12-31	337
2004-03-31	104
2004-06-30	125
2004-09-30	307
2004-12-31	606
2005-03-31	462
2005-06-30	586
2005-09-30	772
2005-12-31	674
2006-03-31	599
2006-06-30	309
2006-09-30	684
2006-12-31	652
2007-03-31	720
2007-06-30	861
2007-09-30	991
2007-12-31	1107
2008-03-31	1124
2008-06-30	1183
2008-09-30	1099
2008-12-31	314
2009-03-31	125
2009-06-30	63
2009-09-30	106
2009-12-31	47
2010-03-31	194
2010-06-30	190
2010-09-30	259
2010-12-31	385
2011-03-31	514
2011-06-30	755
2011-09-30	355
2011-12-31	89
2012-03-31	186
2012-06-30	807
2012-09-30	93
2012-12-31	73
2013-03-31	211
2013-06-30	138
2013-09-30	297
2013-12-31	240
2014-03-31	236
2014-06-30	722
2014-09-30	937
2014-12-31	777
2015-03-31	611
2015-06-30	831
2015-09-30	653
2015-12-31	410
2016-03-31	532
2016-06-30	411
2016-09-30	369
2016-12-31	221
2017-03-31	536
2017-06-30	334
2017-09-30	586
2017-12-31	329
2018-03-31	518
2018-06-30	609
2018-09-30	662
2018-12-31	724
2019-03-31	975
2019-06-30	491
2019-09-30	818
2019-12-31	421
2020-03-31	810
2020-06-30	616
2020-09-30	494
2020-12-31	570
2021-03-31	855
2021-06-30	623
2021-09-30	512
2021-12-31	990
2022-03-31	803
2022-06-30	1403
2022-09-30	1091
2022-12-31	821
2023-03-31	801
2023-06-30	729
2023-09-30	514