Quarter	US dollars
2004-12-31	530092
2005-03-31	600835
2005-06-30	627963
2005-09-30	678632
2005-12-31	667979
2006-03-31	738097
2006-06-30	720053
2006-09-30	766612
2006-12-31	754228
2007-03-31	826657
2007-06-30	777097
2007-09-30	833786
2007-12-31	778958
2008-03-31	879725
2008-06-30	790830
2008-09-30	1020154
2008-12-31	776116
2009-03-31	815771
2009-06-30	767135
2009-09-30	741995
2009-12-31	738505
2010-03-31	832506
2010-06-30	789444
2010-09-30	729343
2010-12-31	707288
2011-03-31	759248
2011-06-30	757532
2011-09-30	752643
2011-12-31	708312
2012-03-31	740488
2012-06-30	709203
2012-09-30	726174
2012-12-31	737477
2013-03-31	669892
2013-06-30	743599
2013-09-30	713127
2013-12-31	667068
2014-03-31	699339
2014-06-30	684461
2014-09-30	680711
2014-12-31	679897
2015-03-31	676477
2015-06-30	637215
2015-09-30	498654
2015-12-31	452838
2016-03-31	465713
2016-06-30	501823
2016-09-30	460031
2016-12-31	451103
2017-03-31	499026
2017-06-30	505392
2017-09-30	529960
2017-12-31	514309
2018-03-31	501033
2018-06-30	466367
2018-09-30	440499
2018-12-31	442851
2019-03-31	458647
2019-06-30	474468
2019-09-30	465743
2019-12-31	424168
2020-03-31	552951
2020-06-30	501856
2020-09-30	488990
2020-12-31	443740
2021-03-31	486043
2021-06-30	508534
2021-09-30	531152
2021-12-31	496622
2022-03-31	529711
2022-06-30	522630
2022-09-30	528577
2022-12-31	492240
2023-03-31	546774
2023-06-30	610114
2023-09-30	586275