Quarter	US dollars
2004-12-31	490
2005-03-31	573
2005-06-30	579
2005-09-30	555
2005-12-31	529
2006-03-31	425
2006-06-30	490
2006-09-30	394
2006-12-31	350
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	595
2009-12-31	633
2010-03-31	490
2010-06-30	796
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	930
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	676
2015-12-31	775
2016-03-31	960
2016-06-30	798
2016-09-30	925
2016-12-31	1085
2017-03-31	775
2017-06-30	829
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	729
2019-12-31	956
2020-03-31	1031
2020-06-30	1051
2020-09-30	946
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