Quarter	US dollars
2004-12-31	1522
2005-03-31	1771
2005-06-30	1217
2005-09-30	1045
2005-12-31	1066
2006-03-31	1039
2006-06-30	793
2006-09-30	895
2006-12-31	1851
2007-03-31	2026
2007-06-30	2191
2007-09-30	2257
2007-12-31	2395
2008-03-31	2105
2008-06-30	3859
2008-09-30	3135
2008-12-31	1974
2009-03-31	1809
2009-06-30	1950
2009-09-30	1985
2009-12-31	2070
2010-03-31	1969
2010-06-30	2135
2010-09-30	1806
2010-12-31	1891
2011-03-31	1600
2011-06-30	1641
2011-09-30	1491
2011-12-31	1226
2012-03-31	1360
2012-06-30	1220
2012-09-30	1403
2012-12-31	1555
2013-03-31	1498
2013-06-30	1564
2013-09-30	2288
2013-12-31	2671
2014-03-31	2598
2014-06-30	2513
2014-09-30	2086
2014-12-31	1881
2015-03-31	1794
2015-06-30	1814
2015-09-30	1592
2015-12-31	2970
2016-03-31	2755
2016-06-30	2312
2016-09-30	2168
2016-12-31	3580
2017-03-31	3498
2017-06-30	2386
2017-09-30	2372
2017-12-31	2143
2018-03-31	2561
2018-06-30	2171
2018-09-30	1283
2018-12-31	904
2019-03-31	860
2019-06-30	815
2019-09-30	1161
2019-12-31	1991
2020-03-31	1547
2020-06-30	892
2020-09-30	1570
2020-12-31	1035
2021-03-31	1407
2021-06-30	622
2021-09-30	609
2021-12-31	447
2022-03-31	346
2022-06-30	422
2022-09-30	281
2022-12-31	275
2023-03-31	299
2023-06-30	378
2023-09-30	442