Quarter	US dollars
2004-12-31	328
2005-03-31	350
2005-06-30	432
2005-09-30	425
2005-12-31	772
2006-03-31	675
2006-06-30	771
2006-09-30	581
2006-12-31	1002
2007-03-31	1553
2007-06-30	949
2007-09-30	2245
2007-12-31	2640
2008-03-31	3232
2008-06-30	3588
2008-09-30	5817
2008-12-31	9311
2009-03-31	8269
2009-06-30	5849
2009-09-30	4237
2009-12-31	3511
2010-03-31	3188
2010-06-30	4267
2010-09-30	4298
2010-12-31	4164
2011-03-31	3047
2011-06-30	3311
2011-09-30	4644
2011-12-31	3576
2012-03-31	2987
2012-06-30	3183
2012-09-30	2327
2012-12-31	2485
2013-03-31	2192
2013-06-30	2854
2013-09-30	2572
2013-12-31	2803
2014-03-31	2913
2014-06-30	3168
2014-09-30	3623
2014-12-31	4261
2015-03-31	4582
2015-06-30	3471
2015-09-30	3688
2015-12-31	3251
2016-03-31	3360
2016-06-30	3124
2016-09-30	2445
2016-12-31	2265
2017-03-31	1836
2017-06-30	1743
2017-09-30	1486
2017-12-31	1748
2018-03-31	2039
2018-06-30	1252
2018-09-30	1911
2018-12-31	2020
2019-03-31	1398
2019-06-30	1686
2019-09-30	1956
2019-12-31	1708
2020-03-31	2414
2020-06-30	1911
2020-09-30	2069
2020-12-31	2188
2021-03-31	1538
2021-06-30	1396
2021-09-30	790
2021-12-31	879
2022-03-31	895
2022-06-30	1305
2022-09-30	1034
2022-12-31	949
2023-03-31	955
2023-06-30	855
2023-09-30	661