Quarter	US dollars
2004-12-31	440
2005-03-31	580
2005-06-30	462
2005-09-30	541
2005-12-31	1543
2006-03-31	1414
2006-06-30	1115
2006-09-30	1885
2006-12-31	1638
2007-03-31	2008
2007-06-30	2173
2007-09-30	2539
2007-12-31	2495
2008-03-31	2723
2008-06-30	3857
2008-09-30	2832
2008-12-31	3794
2009-03-31	2666
2009-06-30	3356
2009-09-30	3231
2009-12-31	3084
2010-03-31	3140
2010-06-30	3684
2010-09-30	2970
2010-12-31	3336
2011-03-31	3544
2011-06-30	3031
2011-09-30	1944
2011-12-31	2503
2012-03-31	3342
2012-06-30	3078
2012-09-30	3541
2012-12-31	3331
2013-03-31	3190
2013-06-30	2923
2013-09-30	3066
2013-12-31	2383
2014-03-31	2299
2014-06-30	2293
2014-09-30	2377
2014-12-31	2269
2015-03-31	2030
2015-06-30	2090
2015-09-30	2174
2015-12-31	2015
2016-03-31	2010
2016-06-30	1397
2016-09-30	1491
2016-12-31	1235
2017-03-31	1468
2017-06-30	1829
2017-09-30	1610
2017-12-31	1458
2018-03-31	1622
2018-06-30	1403
2018-09-30	1174
2018-12-31	933
2019-03-31	1315
2019-06-30	1171
2019-09-30	1283
2019-12-31	1252
2020-03-31	1574
2020-06-30	1738
2020-09-30	832
2020-12-31	1065
2021-03-31	1620
2021-06-30	1559
2021-09-30	1088
2021-12-31	1162
2022-03-31	1137
2022-06-30	1067
2022-09-30	1338
2022-12-31	1629
2023-03-31	1565
2023-06-30	1165
2023-09-30	1000