Quarter	US dollars
2004-12-31	141474
2005-03-31	138753
2005-06-30	128097
2005-09-30	128572
2005-12-31	122799
2006-03-31	145193
2006-06-30	134229
2006-09-30	150427
2006-12-31	162084
2007-03-31	185345
2007-06-30	184047
2007-09-30	219605
2007-12-31	202174
2008-03-31	212223
2008-06-30	145801
2008-09-30	162679
2008-12-31	89864
2009-03-31	80077
2009-06-30	80247
2009-09-30	58755
2009-12-31	-2474
2010-03-31	290
2010-06-30	-13220
2010-09-30	-11875
2010-12-31	-8806
2011-03-31	-8227
2011-06-30	-1415
2011-09-30	-12490
2011-12-31	-20976
2012-03-31	-22118
2012-06-30	-20936
2012-09-30	-9284
2012-12-31	20768
2013-03-31	29176
2013-06-30	27003
2013-09-30	30692
2013-12-31	38085
2014-03-31	36224
2014-06-30	37974
2014-09-30	33946
2014-12-31	31433
2015-03-31	19702
2015-06-30	21464
2015-09-30	20558
2015-12-31	13387
2016-03-31	16594
2016-06-30	16810
2016-09-30	14954
2016-12-31	16378
2017-03-31	16964
2017-06-30	10904
2017-09-30	12624
2017-12-31	14823
2018-03-31	16282
2018-06-30	11194
2018-09-30	13250
2018-12-31	6152
2019-03-31	-3291
2019-06-30	-9895
2019-09-30	-5542
2019-12-31	1954
2020-03-31	8446
2020-06-30	1748
2020-09-30	12881
2020-12-31	13598
2021-03-31	18454
2021-06-30	52
2021-09-30	-3413
2021-12-31	915
2022-03-31	-138
2022-06-30	2349
2022-09-30	7563
2022-12-31	6114
2023-03-31	7491
2023-06-30	4441
2023-09-30	4458