Quarter	US dollars
2004-12-31	918
2005-03-31	974
2005-06-30	929
2005-09-30	720
2005-12-31	951
2006-03-31	957
2006-06-30	1030
2006-09-30	1035
2006-12-31	1069
2007-03-31	1069
2007-06-30	1079
2007-09-30	1169
2007-12-31	1183
2008-03-31	1268
2008-06-30	1311
2008-09-30	1394
2008-12-31	1456
2009-03-31	1270
2009-06-30	1482
2009-09-30	1441
2009-12-31	1448
2010-03-31	1427
2010-06-30	1415
2010-09-30	1533
2010-12-31	1581
2011-03-31	1613
2011-06-30	1679
2011-09-30	1661
2011-12-31	1879
2012-03-31	1847
2012-06-30	1818
2012-09-30	1990
2012-12-31	1918
2013-03-31	1864
2013-06-30	1853
2013-09-30	1872
2013-12-31	1846
2014-03-31	1759
2014-06-30	1744
2014-09-30	1647
2014-12-31	1631
2015-03-31	1526
2015-06-30	1535
2015-09-30	1453
2015-12-31	1292
2016-03-31	1270
2016-06-30	1174
2016-09-30	1243
2016-12-31	1287
2017-03-31	790
2017-06-30	716
2017-09-30	487
2017-12-31	408
2018-03-31	396
2018-06-30	338
2018-09-30	310
2018-12-31	342
2019-03-31	349
2019-06-30	410
2019-09-30	494
2019-12-31	872
2020-03-31	551
2020-06-30	457
2020-09-30	377
2020-12-31	388
2021-03-31	370
2021-06-30	341
2021-09-30	349
2021-12-31	338
2022-03-31	332
2022-06-30	327
2022-09-30	322
2022-12-31	344
2023-03-31	335
2023-06-30	336
2023-09-30	349