Quarter	US dollars
1999-09-30	650
1999-12-31	605
2000-03-31	743
2000-06-30	801
2000-09-30	618
2000-12-31	665
2001-03-31	655
2001-06-30	840
2001-09-30	844
2001-12-31	771
2002-03-31	721
2002-06-30	725
2002-09-30	577
2002-12-31	776
2003-03-31	672
2003-06-30	645
2003-09-30	633
2003-12-31	729
2004-03-31	744
2004-06-30	778
2004-09-30	688
2004-12-31	768
2005-03-31	768
2005-06-30	713
2005-09-30	725
2005-12-31	810
2006-03-31	1018
2006-06-30	788
2006-09-30	729
2006-12-31	644
2007-03-31	1161
2007-06-30	833
2007-09-30	754
2007-12-31	950
2008-03-31	1260
2008-06-30	792
2008-09-30	681
2008-12-31	821
2009-03-31	679
2009-06-30	609
2009-09-30	515
2009-12-31	628
2010-03-31	611
2010-06-30	637
2010-09-30	591
2010-12-31	542
2011-03-31	628
2011-06-30	617
2011-09-30	547
2011-12-31	518
2012-03-31	476
2012-06-30	513
2012-09-30	580
2012-12-31	645
2013-03-31	383
2013-06-30	353
2013-09-30	445
2013-12-31	496
2014-03-31	529
2014-06-30	496
2014-09-30	488
2014-12-31	368
2015-03-31	377
2015-06-30	363
2015-09-30	400
2015-12-31	339
2016-03-31	367
2016-06-30	324
2016-09-30	279
2016-12-31	298
2017-03-31	268
2017-06-30	218
2017-09-30	237
2017-12-31	274
2018-03-31	269
2018-06-30	168
2018-09-30	151
2018-12-31	124
2019-03-31	116
2019-06-30	98
2019-09-30	124
2019-12-31	205
2020-03-31	182
2020-06-30	192
2020-09-30	200
2020-12-31	216
2021-03-31	315
2021-06-30	388
2021-09-30	94
2021-12-31	154
2022-03-31	101
2022-06-30	62
2022-09-30	59
2022-12-31	68
2023-03-31	238
2023-06-30	185
2023-09-30	105