Quarter	US dollars
2004-12-31	240
2005-03-31	147
2005-06-30	228
2005-09-30	228
2005-12-31	342
2006-03-31	368
2006-06-30	664
2006-09-30	648
2006-12-31	679
2007-03-31	1075
2007-06-30	843
2007-09-30	1718
2007-12-31	1899
2008-03-31	2170
2008-06-30	2145
2008-09-30	2017
2008-12-31	3052
2009-03-31	1879
2009-06-30	1589
2009-09-30	1754
2009-12-31	1581
2010-03-31	1775
2010-06-30	2096
2010-09-30	2699
2010-12-31	2295
2011-03-31	2278
2011-06-30	2225
2011-09-30	3047
2011-12-31	2953
2012-03-31	2798
2012-06-30	2808
2012-09-30	2325
2012-12-31	2708
2013-03-31	2522
2013-06-30	2544
2013-09-30	2269
2013-12-31	2104
2014-03-31	2154
2014-06-30	2431
2014-09-30	2531
2014-12-31	2677
2015-03-31	2401
2015-06-30	1740
2015-09-30	1618
2015-12-31	1470
2016-03-31	1178
2016-06-30	1151
2016-09-30	1044
2016-12-31	846
2017-03-31	429
2017-06-30	396
2017-09-30	429
2017-12-31	465
2018-03-31	449
2018-06-30	160
2018-09-30	138
2018-12-31	512
2019-03-31	687
2019-06-30	1076
2019-09-30	1302
2019-12-31	1106
2020-03-31	1372
2020-06-30	706
2020-09-30	702
2020-12-31	444
2021-03-31	305
2021-06-30	423
2021-09-30	1009
2021-12-31	199
2022-03-31	767
2022-06-30	276
2022-09-30	237
2022-12-31	187
2023-03-31	195
2023-06-30	166
2023-09-30	154