Quarter	US dollars
2004-12-31	-918
2005-03-31	-924
2005-06-30	-1690
2005-09-30	-1932
2005-12-31	-2083
2006-03-31	-2484
2006-06-30	-2293
2006-09-30	-3794
2006-12-31	-3401
2007-03-31	-3405
2007-06-30	-3519
2007-09-30	-3838
2007-12-31	-2931
2008-03-31	-1834
2008-06-30	-2637
2008-09-30	-2294
2008-12-31	-2660
2009-03-31	-2201
2009-06-30	-2258
2009-09-30	-1922
2009-12-31	-1710
2010-03-31	-1414
2010-06-30	-1263
2010-09-30	-1204
2010-12-31	-476
2011-03-31	75
2011-06-30	344
2011-09-30	-326
2011-12-31	838
2012-03-31	2853
2012-06-30	2521
2012-09-30	2401
2012-12-31	705
2013-03-31	1432
2013-06-30	1257
2013-09-30	675
2013-12-31	2046
2014-03-31	2209
2014-06-30	2041
2014-09-30	1125
2014-12-31	2491
2015-03-31	2083
2015-06-30	2916
2015-09-30	3455
2015-12-31	1343
2016-03-31	904
2016-06-30	1679
2016-09-30	1345
2016-12-31	2491
2017-03-31	2345
2017-06-30	1450
2017-09-30	1049
2017-12-31	1419
2018-03-31	1026
2018-06-30	2404
2018-09-30	1433
2018-12-31	2148
2019-03-31	1132
2019-06-30	2552
2019-09-30	1915
2019-12-31	1602
2020-03-31	3138
2020-06-30	1390
2020-09-30	1435
2020-12-31	2114
2021-03-31	2454
2021-06-30	2946
2021-09-30	1725
2021-12-31	2385
2022-03-31	2805
2022-06-30	2164
2022-09-30	1265
2022-12-31	1891
2023-03-31	1724
2023-06-30	1659
2023-09-30	2577