Quarter	US dollars
1999-03-31	139
1999-06-30	169
1999-09-30	152
1999-12-31	157
2000-03-31	164
2000-06-30	204
2000-09-30	286
2000-12-31	234
2001-03-31	241
2001-06-30	312
2001-09-30	275
2001-12-31	240
2002-03-31	255
2002-06-30	357
2002-09-30	356
2002-12-31	335
2003-03-31	334
2003-06-30	235
2003-09-30	245
2003-12-31	278
2004-03-31	102
2004-06-30	105
2004-09-30	84
2004-12-31	115
2005-03-31	97
2005-06-30	297
2005-09-30	194
2005-12-31	431
2006-03-31	498
2006-06-30	453
2006-09-30	475
2006-12-31	264
2007-03-31	356
2007-06-30	322
2007-09-30	379
2007-12-31	310
2008-03-31	420
2008-06-30	475
2008-09-30	224
2008-12-31	125
2009-03-31	106
2009-06-30	102
2009-09-30	92
2009-12-31	112
2010-03-31	129
2010-06-30	118
2010-09-30	135
2010-12-31	98
2011-03-31	271
2011-06-30	368
2011-09-30	529
2011-12-31	390
2012-03-31	525
2012-06-30	374
2012-09-30	312
2012-12-31	206
2013-03-31	137
2013-06-30	230
2013-09-30	251
2013-12-31	263
2014-03-31	364
2014-06-30	390
2014-09-30	315
2014-12-31	225
2015-03-31	217
2015-06-30	1198
2015-09-30	961
2015-12-31	841
2016-03-31	807
2016-06-30	156
2016-09-30	150
2016-12-31	26
2017-03-31	101
2017-06-30	140
2017-09-30	113
2017-12-31	95
2018-03-31	139
2018-06-30	103
2018-09-30	86
2018-12-31	134
2019-03-31	33
2019-06-30	273
2019-09-30	101
2019-12-31	253
2020-03-31	145
2020-06-30	184
2020-09-30	250
2020-12-31	277
2021-03-31	197
2021-06-30	260
2021-09-30	269
2021-12-31	352
2022-03-31	430
2022-06-30	325
2022-09-30	283
2022-12-31	327
2023-03-31	213
2023-06-30	308
2023-09-30	225