Quarter	US dollars
2004-12-31	929
2005-03-31	2149
2005-06-30	2128
2005-09-30	1281
2005-12-31	1162
2006-03-31	1424
2006-06-30	1367
2006-09-30	1143
2006-12-31	1417
2007-03-31	1567
2007-06-30	1842
2007-09-30	1919
2007-12-31	1965
2008-03-31	2131
2008-06-30	2404
2008-09-30	1950
2008-12-31	2064
2009-03-31	1823
2009-06-30	1943
2009-09-30	1988
2009-12-31	1993
2010-03-31	1815
2010-06-30	1780
2010-09-30	1864
2010-12-31	4617
2011-03-31	4671
2011-06-30	4844
2011-09-30	4828
2011-12-31	5031
2012-03-31	7815
2012-06-30	7666
2012-09-30	5768
2012-12-31	8870
2013-03-31	41192
2013-06-30	42243
2013-09-30	38582
2013-12-31	33745
2014-03-31	30678
2014-06-30	25907
2014-09-30	23313
2014-12-31	21300
2015-03-31	20671
2015-06-30	20915
2015-09-30	19381
2015-12-31	18482
2016-03-31	18923
2016-06-30	20450
2016-09-30	19937
2016-12-31	17026
2017-03-31	17725
2017-06-30	18572
2017-09-30	16037
2017-12-31	18488
2018-03-31	16588
2018-06-30	14294
2018-09-30	10613
2018-12-31	10063
2019-03-31	10060
2019-06-30	11838
2019-09-30	13748
2019-12-31	12783
2020-03-31	13218
2020-06-30	12752
2020-09-30	14567
2020-12-31	13938
2021-03-31	13858
2021-06-30	15060
2021-09-30	14784
2021-12-31	14078
2022-03-31	15243
2022-06-30	13573
2022-09-30	14750
2022-12-31	16093
2023-03-31	18321
2023-06-30	17156
2023-09-30	18105