Quarter	US dollars
2004-12-31	1033
2005-03-31	1053
2005-06-30	1054
2005-09-30	849
2005-12-31	1085
2006-03-31	1101
2006-06-30	1252
2006-09-30	1211
2006-12-31	1225
2007-03-31	1191
2007-06-30	1224
2007-09-30	1304
2007-12-31	1310
2008-03-31	1393
2008-06-30	1439
2008-09-30	1477
2008-12-31	1463
2009-03-31	1419
2009-06-30	1479
2009-09-30	1398
2009-12-31	1379
2010-03-31	1348
2010-06-30	1356
2010-09-30	1453
2010-12-31	1489
2011-03-31	1476
2011-06-30	1585
2011-09-30	1584
2011-12-31	1837
2012-03-31	1894
2012-06-30	1950
2012-09-30	2025
2014-03-31	2223
2014-06-30	2260
2014-09-30	2140
2014-12-31	2145
2015-03-31	2092
2015-06-30	2026
2015-09-30	2307
2015-12-31	1790
2016-03-31	1820
2016-06-30	1660
2016-09-30	1665
2016-12-31	1203
2017-03-31	1031
2017-06-30	887
2017-09-30	539
2017-12-31	322
2018-03-31	532
2018-06-30	900
2018-09-30	776
2018-12-31	827
2019-03-31	790
2019-06-30	793
2019-09-30	781
2019-12-31	838
2020-03-31	703
2020-06-30	482
2020-09-30	618
2020-12-31	860
2021-03-31	688
2021-06-30	677
2021-09-30	700
2021-12-31	883
2022-03-31	540
2022-06-30	480
2022-09-30	480
2022-12-31	514
2023-03-31	449
2023-06-30	483
2023-09-30	484