Quarter	US dollars
1999-03-31	210
1999-06-30	307
1999-09-30	241
1999-12-31	216
2000-03-31	214
2000-06-30	211
2000-09-30	271
2000-12-31	261
2001-03-31	245
2001-06-30	366
2001-09-30	365
2001-12-31	333
2002-03-31	305
2002-06-30	282
2002-09-30	283
2002-12-31	275
2003-03-31	321
2003-06-30	316
2003-09-30	394
2003-12-31	365
2004-03-31	457
2004-06-30	496
2004-09-30	564
2004-12-31	897
2005-03-31	659
2005-06-30	725
2005-09-30	621
2005-12-31	627
2006-03-31	628
2006-06-30	580
2006-09-30	535
2006-12-31	576
2007-03-31	466
2007-06-30	611
2007-09-30	613
2007-12-31	558
2008-03-31	662
2008-06-30	695
2008-09-30	509
2008-12-31	403
2009-03-31	442
2009-06-30	409
2009-09-30	775
2009-12-31	1178
2010-03-31	1087
2010-06-30	246
2010-09-30	285
2010-12-31	217
2011-03-31	284
2011-06-30	429
2011-09-30	827
2011-12-31	850
2012-03-31	441
2012-06-30	287
2012-09-30	244
2012-12-31	467
2013-03-31	296
2013-06-30	629
2013-09-30	587
2013-12-31	470
2014-03-31	583
2014-06-30	595
2014-09-30	591
2014-12-31	607
2015-03-31	546
2015-06-30	554
2015-09-30	491
2015-12-31	124
2016-03-31	118
2016-06-30	200
2016-09-30	181
2016-12-31	178
2017-03-31	198
2017-06-30	119
2017-09-30	197
2017-12-31	202
2018-03-31	187
2018-06-30	235
2018-09-30	207
2018-12-31	224
2019-03-31	328
2019-06-30	242
2019-09-30	242
2019-12-31	189
2020-03-31	197
2020-06-30	194
2020-09-30	165
2020-12-31	167
2021-03-31	180
2021-06-30	181
2021-09-30	204
2021-12-31	188
2022-03-31	150
2022-06-30	337
2022-09-30	304
2022-12-31	323
2023-03-31	320
2023-06-30	322
2023-09-30	332