Quarter	US dollars
2004-12-31	893
2005-03-31	1023
2005-06-30	1181
2005-09-30	1335
2005-12-31	1557
2006-03-31	1636
2006-06-30	1639
2006-09-30	1655
2006-12-31	1824
2007-03-31	1953
2007-06-30	2002
2007-09-30	2166
2007-12-31	2286
2008-03-31	2451
2008-06-30	2416
2008-09-30	2144
2008-12-31	2151
2009-03-31	2210
2009-06-30	2060
2009-09-30	2145
2009-12-31	2039
2010-03-31	2082
2010-06-30	1604
2010-09-30	1583
2010-12-31	1467
2011-03-31	80
2011-06-30	204
2011-09-30	174
2011-12-31	193
2012-03-31	78
2012-06-30	74
2012-09-30	60
2012-12-31	91
2013-03-31	894
2013-06-30	625
2013-09-30	211
2013-12-31	942
2014-03-31	919
2014-06-30	1173
2014-09-30	1122
2014-12-31	262
2015-03-31	291
2015-06-30	204
2015-09-30	273
2015-12-31	92
2016-03-31	111
2016-06-30	120
2016-09-30	122
2016-12-31	84
2017-03-31	165
2017-06-30	229
2017-09-30	181
2017-12-31	659
2018-03-31	205
2018-06-30	466
2018-09-30	372
2018-12-31	419
2019-03-31	301
2019-06-30	1480
2019-09-30	817
2019-12-31	663
2020-03-31	373
2020-06-30	74
2020-09-30	279
2020-12-31	143
2021-03-31	218
2021-06-30	286
2021-09-30	407
2021-12-31	198
2022-03-31	548
2022-06-30	631
2022-09-30	514
2022-12-31	377
2023-03-31	404
2023-06-30	388
2023-09-30	225