Quarter	US dollars
2004-12-31	300
2005-03-31	238
2005-06-30	41
2005-09-30	221
2005-12-31	177
2006-03-31	284
2006-06-30	224
2006-09-30	140
2006-12-31	235
2007-03-31	220
2007-06-30	197
2007-09-30	695
2007-12-31	677
2008-03-31	785
2008-06-30	543
2008-09-30	406
2008-12-31	497
2009-03-31	479
2009-06-30	611
2009-09-30	472
2009-12-31	484
2010-03-31	1024
2010-06-30	1508
2010-09-30	1809
2010-12-31	2455
2011-03-31	2358
2011-06-30	2249
2011-09-30	1673
2011-12-31	991
2012-03-31	1667
2012-06-30	1595
2012-09-30	998
2012-12-31	1007
2013-03-31	943
2013-06-30	957
2013-09-30	1033
2013-12-31	1008
2014-03-31	817
2014-06-30	843
2014-09-30	966
2014-12-31	322
2015-03-31	264
2015-06-30	238
2015-09-30	201
2015-12-31	193
2016-03-31	187
2016-06-30	220
2016-09-30	177
2016-12-31	138
2017-03-31	136
2017-06-30	129
2017-09-30	125
2017-12-31	81
2018-03-31	102
2018-06-30	95
2018-09-30	76
2018-12-31	73
2019-03-31	77
2019-06-30	70
2019-09-30	70
2019-12-31	75
2020-03-31	72
2020-06-30	62
2020-09-30	65
2020-12-31	63
2021-03-31	63
2021-06-30	66
2021-09-30	71
2021-12-31	66
2022-03-31	70
2022-06-30	58
2022-09-30	57
2022-12-31	58
2023-03-31	56
2023-06-30	51
2023-09-30	51