Quarter	US dollars
2004-12-31	476
2005-03-31	561
2005-06-30	579
2005-09-30	559
2005-12-31	551
2006-03-31	517
2006-06-30	712
2006-09-30	514
2006-12-31	544
2007-03-31	626
2007-06-30	626
2007-09-30	536
2007-12-31	587
2008-12-31	874
2009-09-30	1025
2010-06-30	1845
2010-09-30	2010
2011-03-31	1516
2011-06-30	1411
2014-03-31	1667
2014-06-30	1481
2014-12-31	1670
2015-03-31	1618
2015-06-30	1598
2015-09-30	1163
2015-12-31	1206
2016-03-31	1477
2016-06-30	1344
2016-09-30	1420
2016-12-31	1538
2017-03-31	1306
2017-06-30	1111
2017-09-30	1077
2017-12-31	1081
2018-03-31	912
2018-06-30	1201
2018-09-30	1329
2018-12-31	1300
2019-03-31	1078
2019-06-30	1188
2019-09-30	981
2019-12-31	1177
2020-03-31	1275
2020-06-30	1184
2020-09-30	1214
2020-12-31	1318
2021-03-31	1193
2021-06-30	1068
2021-09-30	949
2021-12-31	706
2022-03-31	1223
2022-06-30	906
2022-09-30	642
2022-12-31	1041
2023-03-31	1023
2023-06-30	946
2023-09-30	785