Quarter	US dollars
2004-12-31	1071
2005-03-31	567
2005-06-30	826
2005-09-30	799
2005-12-31	616
2006-03-31	630
2006-06-30	999
2006-09-30	667
2006-12-31	609
2007-03-31	839
2007-06-30	1089
2007-09-30	1854
2007-12-31	2144
2008-03-31	2590
2008-06-30	3116
2008-09-30	2085
2008-12-31	3229
2009-03-31	2743
2009-06-30	2399
2009-09-30	2668
2009-12-31	2251
2010-03-31	2321
2010-06-30	2484
2010-09-30	2647
2010-12-31	2395
2011-03-31	2315
2011-06-30	2245
2011-09-30	2976
2011-12-31	2740
2012-03-31	2909
2012-06-30	2689
2012-09-30	1733
2012-12-31	2039
2013-03-31	1670
2013-06-30	1394
2013-09-30	1339
2013-12-31	1373
2014-03-31	1559
2014-06-30	1431
2014-09-30	1315
2014-12-31	1253
2015-03-31	1177
2015-06-30	1008
2015-09-30	800
2015-12-31	649
2016-03-31	664
2016-06-30	422
2016-09-30	362
2016-12-31	193
2017-03-31	158
2017-06-30	168
2017-09-30	168
2017-12-31	127
2018-03-31	133
2018-06-30	74
2018-09-30	91
2018-12-31	88
2019-03-31	126
2019-06-30	85
2019-09-30	132
2019-12-31	78
2020-03-31	172
2020-06-30	89
2020-09-30	114
2020-12-31	87
2021-03-31	126
2021-06-30	115
2021-09-30	97
2021-12-31	59
2022-03-31	67
2022-06-30	150
2022-09-30	230
2022-12-31	98
2023-03-31	74
2023-06-30	77
2023-09-30	139