Quarter	US dollars
2004-12-31	20558
2005-03-31	11212
2005-06-30	23098
2005-09-30	28393
2005-12-31	21243
2006-03-31	14702
2006-06-30	16900
2006-09-30	31933
2006-12-31	30670
2007-03-31	33995
2007-06-30	16388
2007-09-30	21749
2007-12-31	16668
2008-03-31	11092
2008-06-30	28383
2008-09-30	25359
2008-12-31	24954
2009-03-31	43933
2009-06-30	54761
2009-09-30	55980
2009-12-31	61475
2010-03-31	65133
2010-06-30	70574
2010-09-30	68448
2010-12-31	55821
2011-03-31	67861
2011-06-30	61064
2011-09-30	101558
2011-12-31	77175
2012-03-31	207021
2012-06-30	184081
2012-09-30	173256
2012-12-31	155148
2013-03-31	96211
2013-06-30	89073
2013-09-30	68897
2013-12-31	67623
2014-03-31	65563
2014-06-30	52741
2014-09-30	54693
2014-12-31	62451
2015-03-31	55384
2015-06-30	56071
2015-09-30	59714
2015-12-31	78123
2016-03-31	73312
2016-06-30	81538
2016-09-30	82221
2016-12-31	102820
2017-03-31	112394
2017-06-30	114790
2017-09-30	126634
2017-12-31	114805
2018-03-31	111791
2018-06-30	142538
2018-09-30	130612
2018-12-31	82606
2019-03-31	91360
2019-06-30	90285
2019-09-30	80569
2019-12-31	82543
2020-03-31	83475
2020-06-30	111864
2020-09-30	117554
2020-12-31	130112
2021-03-31	123129
2021-06-30	121396
2021-09-30	112184
2021-12-31	120352
2022-03-31	127175
2022-06-30	126194
2022-09-30	116556
2022-12-31	132066
2023-03-31	131537
2023-06-30	128734
2023-09-30	126923