Quarter	US dollars
2004-12-31	0
2005-03-31	2
2005-06-30	0
2005-09-30	0
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	17
2006-12-31	18
2007-03-31	18
2007-06-30	18
2007-09-30	18
2007-12-31	18
2008-03-31	20
2008-06-30	20
2008-09-30	20
2008-12-31	19
2009-03-31	20
2009-06-30	18
2009-09-30	19
2009-12-31	18
2010-03-31	18
2010-06-30	18
2010-09-30	20
2010-12-31	120
2011-03-31	131
2011-06-30	137
2011-09-30	120
2011-12-31	110
2012-03-31	459
2012-06-30	489
2012-09-30	518
2012-12-31	597
2013-03-31	1371
2013-06-30	1896
2013-09-30	1853
2013-12-31	1492
2014-03-31	1619
2014-06-30	1624
2014-09-30	1579
2014-12-31	1450
2015-03-31	1385
2015-06-30	1384
2015-09-30	1313
2015-12-31	1144
2016-03-31	1011
2016-06-30	1006
2016-09-30	898
2016-12-31	747
2017-03-31	1131
2017-06-30	1077
2017-09-30	1387
2017-12-31	1306
2018-03-31	1323
2018-06-30	1205
2018-09-30	559
2018-12-31	1134
2019-03-31	1153
2019-06-30	1078
2019-09-30	1042
2019-12-31	1045
2020-03-31	967
2020-06-30	987
2020-09-30	1011
2020-12-31	979
2021-03-31	912
2021-06-30	890
2021-09-30	866
2021-12-31	832
2022-03-31	817
2022-06-30	764
2022-09-30	720
2022-12-31	780
2023-03-31	793
2023-06-30	448
2023-09-30	435