Quarter	US dollars
2004-12-31	1215
2005-03-31	1363
2005-06-30	1373
2005-09-30	1424
2005-12-31	1464
2006-03-31	1516
2006-06-30	1690
2006-09-30	1468
2006-12-31	1413
2007-03-31	1408
2007-06-30	1942
2007-09-30	2209
2007-12-31	2268
2008-03-31	2419
2008-06-30	1596
2008-09-30	1331
2008-12-31	1274
2009-03-31	1159
2009-06-30	1306
2009-09-30	1593
2009-12-31	2283
2010-03-31	2005
2010-06-30	1682
2010-09-30	1651
2010-12-31	1558
2011-03-31	1419
2011-06-30	1212
2011-09-30	1326
2011-12-31	1500
2012-03-31	1576
2012-06-30	1385
2012-09-30	1447
2012-12-31	1248
2013-03-31	996
2013-06-30	887
2013-09-30	917
2013-12-31	507
2014-03-31	355
2014-06-30	427
2014-09-30	353
2014-12-31	351
2015-03-31	310
2015-06-30	242
2015-09-30	229
2015-12-31	258
2016-03-31	207
2016-06-30	214
2016-09-30	203
2016-12-31	161
2017-03-31	168
2017-06-30	249
2017-09-30	227
2017-12-31	397
2018-03-31	340
2018-06-30	275
2018-09-30	374
2018-12-31	216
2019-03-31	222
2019-06-30	202
2019-09-30	192
2019-12-31	182
2020-03-31	167
2020-06-30	164
2020-09-30	168
2020-12-31	165
2021-03-31	126
2021-06-30	126
2021-09-30	132
2021-12-31	142
2022-03-31	96
2022-06-30	135
2022-09-30	120
2022-12-31	117
2023-03-31	116
2023-06-30	79
2023-09-30	114