Quarter	US dollars
2004-12-31	59162
2005-03-31	69909
2005-06-30	64168
2005-09-30	70014
2005-12-31	62248
2006-03-31	71072
2006-06-30	70873
2006-09-30	76230
2006-12-31	81206
2007-03-31	84501
2007-06-30	80569
2007-09-30	96398
2007-12-31	89571
2008-03-31	104990
2008-06-30	103298
2008-09-30	91465
2008-12-31	67298
2009-03-31	66305
2009-06-30	68472
2009-09-30	65701
2009-12-31	88078
2010-03-31	83619
2010-06-30	81797
2010-09-30	95363
2010-12-31	92753
2011-03-31	97087
2011-06-30	107124
2011-09-30	102307
2011-12-31	97387
2012-03-31	101281
2012-06-30	101184
2012-09-30	102344
2012-12-31	95548
2013-03-31	100254
2013-06-30	101417
2013-09-30	104302
2013-12-31	102115
2014-03-31	103233
2014-06-30	109163
2014-09-30	107927
2014-12-31	106228
2015-03-31	101611
2015-06-30	95749
2015-09-30	80397
2015-12-31	75319
2016-03-31	80745
2016-06-30	80395
2016-09-30	71825
2016-12-31	73147
2017-03-31	78144
2017-06-30	70020
2017-09-30	71647
2017-12-31	73859
2018-03-31	75482
2018-06-30	75983
2018-09-30	75809
2018-12-31	75802
2019-03-31	81798
2019-06-30	77981
2019-09-30	77726
2019-12-31	76792
2020-03-31	83607
2020-06-30	79509
2020-09-30	81637
2020-12-31	74327
2021-03-31	93181
2021-06-30	86461
2021-09-30	87109
2021-12-31	82473
2022-03-31	86424
2022-06-30	82125
2022-09-30	84556
2022-12-31	80716
2023-03-31	84839
2023-06-30	86022
2023-09-30	84807