Quarter	US dollars
2004-12-31	212990
2005-03-31	276991
2005-06-30	278576
2005-09-30	340977
2005-12-31	241102
2006-03-31	306540
2006-06-30	301682
2006-09-30	339852
2006-12-31	351479
2007-03-31	382073
2007-06-30	354122
2007-09-30	396684
2007-12-31	368924
2008-03-31	453832
2008-06-30	395709
2008-09-30	408366
2008-12-31	345619
2009-03-31	249725
2009-06-30	247020
2009-09-30	288566
2009-12-31	283197
2010-03-31	327601
2010-06-30	291041
2010-09-30	335197
2010-12-31	293874
2011-03-31	318447
2011-06-30	276744
2011-09-30	326424
2011-12-31	277047
2012-03-31	298197
2012-06-30	293984
2012-09-30	300891
2012-12-31	277651
2013-03-31	285655
2013-06-30	277177
2013-09-30	285630
2013-12-31	248178
2014-03-31	257573
2014-06-30	253470
2014-09-30	222464
2014-12-31	213196
2015-03-31	223055
2015-06-30	193534
2015-09-30	189203
2015-12-31	166069
2016-03-31	170365
2016-06-30	144822
2016-09-30	133546
2016-12-31	117497
2017-03-31	139607
2017-06-30	189410
2017-09-30	170807
2017-12-31	180722
2018-03-31	210902
2018-06-30	225493
2018-09-30	188285
2018-12-31	172311
2019-03-31	199094
2019-06-30	274580
2019-09-30	285727
2019-12-31	230187
2020-03-31	298617
2020-06-30	270461
2020-09-30	305121
2020-12-31	332593
2021-03-31	346888
2021-06-30	283699
2021-09-30	284716
2021-12-31	262506
2022-03-31	314164
2022-06-30	286392
2022-09-30	293069
2022-12-31	309568
2023-03-31	338762
2023-06-30	343159
2023-09-30	327832