Quarter	US dollars
2004-12-31	82663
2005-03-31	91155
2005-06-30	91862
2005-09-30	89931
2005-12-31	93249
2006-03-31	116645
2006-06-30	111131
2006-09-30	115642
2006-12-31	121211
2007-03-31	119431
2007-06-30	114379
2007-09-30	129625
2007-12-31	138819
2008-03-31	158932
2008-06-30	155763
2008-09-30	131599
2008-12-31	131421
2009-03-31	126944
2009-06-30	133992
2009-09-30	132745
2009-12-31	230414
2010-03-31	219310
2010-06-30	237840
2010-09-30	270291
2010-12-31	263705
2011-03-31	262586
2011-06-30	248484
2011-09-30	226498
2011-12-31	220192
2012-03-31	221294
2012-06-30	221320
2012-09-30	215775
2012-12-31	158810
2013-03-31	176364
2013-06-30	177557
2013-09-30	189293
2013-12-31	183768
2014-03-31	184744
2014-06-30	185767
2014-09-30	188169
2014-12-31	192216
2015-03-31	202042
2015-06-30	192111
2015-09-30	176894
2015-12-31	169230
2016-03-31	172749
2016-06-30	173816
2016-09-30	160652
2016-12-31	167101
2017-03-31	166239
2017-06-30	163840
2017-09-30	170093
2017-12-31	169025
2018-03-31	166652
2018-06-30	166041
2018-09-30	162141
2018-12-31	165417
2019-03-31	171463
2019-06-30	172786
2019-09-30	175914
2019-12-31	175427
2020-03-31	184343
2020-06-30	180124
2020-09-30	161259
2020-12-31	152555
2021-03-31	155335
2021-06-30	158293
2021-09-30	161933
2021-12-31	160376
2022-03-31	157577
2022-06-30	146221
2022-09-30	147521
2022-12-31	142498
2023-03-31	149236
2023-06-30	159852
2023-09-30	157063