Quarter	US dollars
2004-12-31	491
2005-03-31	575
2005-06-30	581
2005-09-30	557
2005-12-31	530
2006-03-31	427
2006-06-30	492
2006-09-30	396
2006-12-31	352
2007-03-31	355
2007-06-30	405
2007-09-30	210
2007-12-31	207
2008-03-31	276
2008-06-30	346
2008-09-30	415
2008-12-31	358
2009-03-31	602
2009-06-30	532
2009-09-30	613
2009-12-31	649
2010-03-31	502
2010-06-30	808
2010-09-30	1431
2010-12-31	787
2011-03-31	1120
2011-06-30	1697
2011-09-30	908
2011-12-31	1183
2012-03-31	928
2012-06-30	1115
2012-09-30	806
2012-12-31	889
2013-03-31	844
2013-06-30	1309
2013-09-30	1299
2013-12-31	1152
2014-03-31	1214
2014-06-30	1062
2014-09-30	969
2014-12-31	1079
2015-03-31	1128
2015-06-30	1029
2015-09-30	679
2015-12-31	777
2016-03-31	962
2016-06-30	799
2016-09-30	926
2016-12-31	1086
2017-03-31	777
2017-06-30	830
2017-09-30	447
2017-12-31	774
2018-03-31	519
2018-06-30	845
2018-09-30	790
2018-12-31	847
2019-03-31	694
2019-06-30	780
2019-09-30	736
2019-12-31	956
2020-03-31	1031
2020-06-30	1052
2020-09-30	947
2020-12-31	1129
2021-03-31	1010
2021-06-30	938
2021-09-30	854
2021-12-31	621
2022-03-31	1119
2022-06-30	754
2022-09-30	462
2022-12-31	746
2023-03-31	400
2023-06-30	581
2023-09-30	372