Quarter	US dollars
2004-12-31	121
2005-03-31	161
2005-06-30	158
2005-09-30	177
2005-12-31	393
2006-03-31	439
2006-06-30	259
2006-09-30	239
2006-12-31	280
2007-03-31	265
2007-06-30	265
2007-09-30	318
2007-12-31	327
2008-03-31	362
2008-06-30	316
2008-09-30	310
2008-12-31	312
2009-03-31	258
2009-06-30	262
2009-09-30	275
2009-12-31	266
2010-03-31	237
2010-06-30	224
2010-09-30	241
2010-12-31	213
2011-03-31	218
2011-06-30	197
2011-09-30	181
2011-12-31	224
2012-03-31	398
2012-06-30	400
2012-09-30	833
2012-12-31	508
2013-03-31	431
2013-06-30	432
2013-09-30	398
2013-12-31	392
2014-03-31	432
2014-06-30	486
2014-09-30	516
2014-12-31	481
2015-03-31	316
2015-06-30	308
2015-09-30	320
2015-12-31	347
2016-03-31	348
2016-06-30	360
2016-09-30	347
2016-12-31	427
2017-03-31	843
2017-06-30	721
2017-09-30	735
2017-12-31	715
2018-03-31	704
2018-06-30	677
2018-09-30	724
2018-12-31	702
2019-03-31	737
2019-06-30	734
2019-09-30	739
2019-12-31	697
2020-03-31	770
2020-06-30	732
2020-09-30	750
2020-12-31	783
2021-03-31	770
2021-06-30	811
2021-09-30	794
2021-12-31	765
2022-03-31	663
2022-06-30	727
2022-09-30	678
2022-12-31	670
2023-03-31	627
2023-06-30	562
2023-09-30	517