Quarter	US dollars
1999-03-31	138
1999-06-30	139
1999-09-30	106
1999-12-31	98
2000-03-31	127
2000-06-30	189
2000-09-30	320
2000-12-31	335
2001-03-31	493
2001-06-30	288
2001-09-30	244
2001-12-31	353
2002-03-31	342
2002-06-30	451
2002-09-30	457
2002-12-31	681
2003-03-31	821
2003-06-30	860
2003-09-30	1069
2003-12-31	1018
2004-03-31	1114
2004-06-30	1213
2004-09-30	1052
2004-12-31	1010
2005-03-31	1088
2005-06-30	1088
2005-09-30	1089
2005-12-31	868
2006-03-31	1200
2006-06-30	1550
2006-09-30	1468
2006-12-31	1660
2007-03-31	1309
2007-06-30	1260
2007-09-30	1667
2007-12-31	1704
2008-03-31	1199
2008-06-30	1516
2008-09-30	1002
2008-12-31	1653
2009-03-31	1074
2009-06-30	800
2009-09-30	934
2009-12-31	747
2010-03-31	595
2010-06-30	795
2010-09-30	624
2010-12-31	596
2011-03-31	1142
2011-06-30	2916
2011-09-30	4032
2011-12-31	3469
2012-03-31	2591
2012-06-30	2974
2012-09-30	3682
2012-12-31	2507
2013-03-31	3089
2013-06-30	4610
2013-09-30	3515
2013-12-31	3240
2014-03-31	3219
2014-06-30	3562
2014-09-30	2282
2014-12-31	3797
2015-03-31	2455
2015-06-30	1976
2015-09-30	1608
2015-12-31	1836
2016-03-31	1862
2016-06-30	1250
2016-09-30	1057
2016-12-31	913
2017-03-31	958
2017-06-30	1809
2017-09-30	1667
2017-12-31	1720
2018-03-31	2156
2018-06-30	2144
2018-09-30	1661
2018-12-31	864
2019-03-31	807
2019-06-30	777
2019-09-30	708
2019-12-31	549
2020-03-31	485
2020-06-30	756
2020-09-30	933
2020-12-31	881
2021-03-31	802
2021-06-30	421
2021-09-30	334
2021-12-31	538
2022-03-31	726
2022-06-30	746
2022-09-30	699
2022-12-31	824
2023-03-31	1098
2023-06-30	1274
2023-09-30	1153