Quarter	US dollars
2004-12-31	274565
2005-03-31	293439
2005-06-30	283421
2005-09-30	298745
2005-12-31	300572
2006-03-31	366262
2006-06-30	383621
2006-09-30	403985
2006-12-31	421896
2007-03-31	479122
2007-06-30	549318
2007-09-30	618608
2007-12-31	633811
2008-03-31	737885
2008-06-30	725294
2008-09-30	654008
2008-12-31	657666
2009-03-31	620624
2009-06-30	623060
2009-09-30	640593
2009-12-31	601736
2010-03-31	563518
2010-06-30	545298
2010-09-30	638881
2010-12-31	588306
2011-03-31	635580
2011-06-30	629617
2011-09-30	604919
2011-12-31	564586
2012-03-31	593840
2012-06-30	569593
2012-09-30	551834
2012-12-31	551010
2013-03-31	527392
2013-06-30	509951
2013-09-30	519973
2013-12-31	507066
2014-03-31	482437
2014-06-30	484893
2014-09-30	444935
2014-12-31	404839
2015-03-31	363410
2015-06-30	355422
2015-09-30	338835
2015-12-31	323840
2016-03-31	339664
2016-06-30	321475
2016-09-30	326574
2016-12-31	308195
2017-03-31	319036
2017-06-30	334441
2017-09-30	330509
2017-12-31	342334
2018-03-31	350234
2018-06-30	317173
2018-09-30	308491
2018-12-31	308654
2019-03-31	312113
2019-06-30	330085
2019-09-30	340450
2019-12-31	327274
2020-03-31	323082
2020-06-30	323446
2020-09-30	336797
2020-12-31	350486
2021-03-31	311243
2021-06-30	318043
2021-09-30	314992
2021-12-31	304687
2022-03-31	289890
2022-06-30	254450
2022-09-30	239344
2022-12-31	239931
2023-03-31	251294
2023-06-30	270805
2023-09-30	262832