Quarter	US dollars
2004-12-31	123444
2005-03-31	126954
2005-06-30	128282
2005-09-30	128098
2005-12-31	128132
2006-03-31	127383
2006-06-30	128846
2006-09-30	139777
2006-12-31	131643
2007-03-31	140655
2007-06-30	138953
2007-09-30	152744
2007-12-31	139610
2008-03-31	140906
2008-06-30	142889
2008-09-30	148693
2008-12-31	167189
2009-03-31	174698
2009-06-30	197168
2009-09-30	205579
2009-12-31	216638
2010-03-31	210450
2010-06-30	216958
2010-09-30	242482
2010-12-31	248814
2011-03-31	261105
2011-06-30	257867
2011-09-30	262838
2011-12-31	260855
2012-03-31	265604
2012-06-30	267840
2012-09-30	274134
2012-12-31	288651
2013-03-31	293305
2013-06-30	294291
2013-09-30	308238
2013-12-31	317602
2014-03-31	316200
2014-06-30	326424
2014-09-30	331424
2014-12-31	322168
2015-03-31	330372
2015-06-30	340660
2015-09-30	347898
2015-12-31	331145
2016-03-31	336253
2016-06-30	346163
2016-09-30	353922
2016-12-31	355382
2017-03-31	358012
2017-06-30	362129
2017-09-30	372472
2017-12-31	382336
2018-03-31	387333
2018-06-30	401770
2018-09-30	406058
2018-12-31	411514
2019-03-31	401026
2019-06-30	423746
2019-09-30	425373
2019-12-31	430650
2020-03-31	429775
2020-06-30	443545
2020-09-30	463139
2020-12-31	462101
2021-03-31	462912
2021-06-30	476208
2021-09-30	472637
2021-12-31	457005
2022-03-31	474794
2022-06-30	478730
2022-09-30	478183
2022-12-31	471605
2023-03-31	470535
2023-06-30	463216
2023-09-30	459584