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	61
2010-09-30	63
2010-12-31	164
2011-03-31	174
2011-06-30	185
2011-09-30	162
2011-12-31	110
2012-03-31	459
2012-06-30	489
2012-09-30	518
2012-12-31	614
2013-03-31	1389
2013-06-30	1914
2013-09-30	1853
2013-12-31	1496
2014-03-31	1622
2014-06-30	1628
2014-09-30	1584
2014-12-31	1455
2015-03-31	1390
2015-06-30	1387
2015-09-30	1318
2015-12-31	1147
2016-03-31	1012
2016-06-30	1007
2016-09-30	899
2016-12-31	749
2017-03-31	1132
2017-06-30	1078
2017-09-30	1389
2017-12-31	1308
2018-03-31	1325
2018-06-30	1207
2018-09-30	561
2018-12-31	1134
2019-03-31	1130
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	891
2021-09-30	867
2021-12-31	833
2022-03-31	819
2022-06-30	765
2022-09-30	721
2022-12-31	781
2023-03-31	795
2023-06-30	450
2023-09-30	437