Quarter	US dollars
2004-12-31	493
2005-03-31	492
2005-06-30	462
2005-09-30	469
2005-12-31	657
2006-03-31	628
2006-06-30	612
2006-09-30	620
2006-12-31	706
2007-03-31	706
2007-06-30	839
2007-09-30	829
2007-12-31	824
2008-03-31	1699
2008-06-30	1584
2008-09-30	1513
2008-12-31	1545
2009-03-31	1250
2009-06-30	1347
2009-09-30	1398
2009-12-31	1599
2010-03-31	1715
2010-06-30	1592
2010-09-30	1771
2010-12-31	1983
2011-03-31	1802
2011-06-30	1872
2011-09-30	1827
2011-12-31	2216
2012-03-31	2030
2012-06-30	2108
2012-09-30	2597
2012-12-31	2380
2013-03-31	2455
2013-06-30	2369
2013-09-30	2382
2013-12-31	2408
2014-03-31	2374
2014-06-30	1983
2014-09-30	1753
2014-12-31	1868
2015-03-31	1972
2015-06-30	1681
2015-09-30	1831
2015-12-31	1892
2016-03-31	1819
2016-06-30	1994
2016-09-30	1915
2016-12-31	2119
2017-03-31	2122
2017-06-30	1443
2017-09-30	1370
2017-12-31	1439
2018-03-31	1003
2018-06-30	980
2018-09-30	1124
2018-12-31	1144
2019-03-31	1369
2019-06-30	1322
2019-09-30	1252
2019-12-31	1330
2020-03-31	1255
2020-06-30	1247
2020-09-30	1154
2020-12-31	1059
2021-03-31	988
2021-06-30	1000
2021-09-30	991
2021-12-31	947
2022-03-31	881
2022-06-30	726
2022-09-30	779
2022-12-31	668
2023-03-31	655
2023-06-30	637
2023-09-30	604