Quarter	US dollars
2004-12-31	365
2005-03-31	563
2005-06-30	624
2005-09-30	2082
2005-12-31	2316
2006-03-31	2581
2006-06-30	2929
2006-09-30	3142
2006-12-31	3532
2007-03-31	3181
2007-06-30	4388
2007-09-30	7007
2007-12-31	7643
2008-03-31	4013
2008-06-30	3236
2008-09-30	5188
2008-12-31	2927
2009-03-31	2151
2009-06-30	1634
2009-09-30	1590
2009-12-31	991
2010-03-31	1089
2010-06-30	1119
2010-09-30	1501
2010-12-31	1464
2011-03-31	2053
2011-06-30	1835
2011-09-30	1584
2011-12-31	2304
2012-03-31	615
2012-06-30	504
2012-09-30	772
2012-12-31	1361
2013-03-31	4392
2013-06-30	4251
2013-09-30	3934
2013-12-31	3562
2014-03-31	3360
2014-06-30	3231
2014-09-30	3041
2014-12-31	3599
2015-03-31	4004
2015-06-30	4173
2015-09-30	3791
2015-12-31	4063
2016-03-31	4026
2016-06-30	3038
2016-09-30	2540
2016-12-31	2151
2017-03-31	1101
2017-06-30	1547
2017-09-30	2584
2017-12-31	2634
2018-03-31	2432
2018-06-30	2268
2018-09-30	1674
2018-12-31	2324
2019-03-31	3258
2019-06-30	4838
2019-09-30	5360
2019-12-31	3408
2020-03-31	3111
2020-06-30	3526
2020-09-30	3639
2020-12-31	2971
2021-03-31	3030
2021-06-30	1908
2021-09-30	2515
2021-12-31	2369
2022-03-31	2581
2022-06-30	2783
2022-09-30	2557
2022-12-31	1955
2023-03-31	1889
2023-06-30	1853
2023-09-30	2177