Quarter	US dollars
2004-12-31	1304
2005-03-31	1138
2005-06-30	557
2005-09-30	166
2005-12-31	294
2006-03-31	286
2006-06-30	340
2006-09-30	217
2006-12-31	149
2007-03-31	463
2007-06-30	225
2007-09-30	522
2007-12-31	177
2008-03-31	1063
2008-06-30	412
2008-09-30	274
2008-12-31	180
2009-03-31	102
2009-06-30	122
2009-09-30	232
2009-12-31	89
2010-03-31	143
2010-06-30	81
2010-09-30	418
2010-12-31	560
2011-03-31	548
2011-06-30	488
2011-09-30	305
2011-12-31	277
2012-03-31	914
2012-06-30	1096
2012-09-30	388
2012-12-31	495
2013-03-31	357
2013-06-30	375
2013-09-30	450
2013-12-31	1598
2014-03-31	1307
2014-06-30	896
2014-09-30	995
2014-12-31	1005
2015-03-31	1280
2015-06-30	1453
2015-09-30	1690
2015-12-31	1556
2016-03-31	1393
2016-06-30	1139
2016-09-30	909
2016-12-31	796
2017-03-31	670
2017-06-30	1832
2017-09-30	1626
2017-12-31	1836
2018-03-31	1386
2018-06-30	1372
2018-09-30	1399
2018-12-31	1632
2019-03-31	1091
2019-06-30	999
2019-09-30	876
2019-12-31	756
2020-03-31	935
2020-06-30	669
2020-09-30	691
2020-12-31	629
2021-03-31	786
2021-06-30	941
2021-09-30	626
2021-12-31	571
2022-03-31	576
2022-06-30	659
2022-09-30	623
2022-12-31	396
2023-03-31	560
2023-06-30	477
2023-09-30	381