Quarter	US dollars
2004-12-31	194198
2005-03-31	214971
2005-06-30	248890
2005-09-30	337858
2005-12-31	332254
2006-03-31	372050
2006-06-30	381350
2006-09-30	398773
2006-12-31	427217
2007-03-31	463979
2007-06-30	494503
2007-09-30	567882
2007-12-31	603221
2008-03-31	653786
2008-06-30	659824
2008-09-30	648356
2008-12-31	564837
2009-03-31	549489
2009-06-30	586220
2009-09-30	621765
2009-12-31	636037
2010-03-31	704175
2010-06-30	748631
2010-09-30	822315
2010-12-31	861720
2011-03-31	904292
2011-06-30	979750
2011-09-30	928010
2011-12-31	910076
2012-03-31	947552
2012-06-30	929764
2012-09-30	930846
2012-12-31	935209
2013-03-31	959816
2013-06-30	930265
2013-09-30	958965
2013-12-31	939375
2014-03-31	969577
2014-06-30	964173
2014-09-30	952436
2014-12-31	917627
2015-03-31	895604
2015-06-30	863178
2015-09-30	802515
2015-12-31	764457
2016-03-31	766839
2016-06-30	761593
2016-09-30	731786
2016-12-31	691419
2017-03-31	734798
2017-06-30	728942
2017-09-30	729841
2017-12-31	750449
2018-03-31	770702
2018-06-30	729792
2018-09-30	723187
2018-12-31	734654
2019-03-31	763086
2019-06-30	770213
2019-09-30	751623
2019-12-31	757191
2020-03-31	758179
2020-06-30	743011
2020-09-30	734784
2020-12-31	805272
2021-03-31	815328
2021-06-30	834296
2021-09-30	822256
2021-12-31	864517
2022-03-31	847772
2022-06-30	814718
2022-09-30	815894
2022-12-31	823681
2023-03-31	844061
2023-06-30	839749
2023-09-30	817063