Quarter	US dollars
2004-12-31	34094
2005-03-31	46407
2005-06-30	47410
2005-09-30	65523
2005-12-31	44894
2006-03-31	58388
2006-06-30	61568
2006-09-30	69551
2006-12-31	63340
2007-03-31	74361
2007-06-30	89891
2007-09-30	93458
2007-12-31	115333
2008-03-31	124296
2008-06-30	122320
2008-09-30	120208
2008-12-31	97840
2009-03-31	106560
2009-06-30	136454
2009-09-30	146013
2009-12-31	150932
2010-03-31	180619
2010-06-30	181763
2010-09-30	210567
2010-12-31	210267
2011-03-31	240073
2011-06-30	269566
2011-09-30	245438
2011-12-31	242033
2012-03-31	250254
2012-06-30	232388
2012-09-30	236922
2012-12-31	250143
2013-03-31	254276
2013-06-30	233946
2013-09-30	230309
2013-12-31	228972
2014-03-31	231966
2014-06-30	222699
2014-09-30	224873
2014-12-31	217685
2015-03-31	205279
2015-06-30	195589
2015-09-30	181193
2015-12-31	170872
2016-03-31	182293
2016-06-30	183276
2016-09-30	187112
2016-12-31	170205
2017-03-31	187351
2017-06-30	209986
2017-09-30	200089
2017-12-31	221406
2018-03-31	227775
2018-06-30	207117
2018-09-30	206073
2018-12-31	217110
2019-03-31	225818
2019-06-30	225092
2019-09-30	218604
2019-12-31	219935
2020-03-31	221051
2020-06-30	224527
2020-09-30	219500
2020-12-31	257589
2021-03-31	263889
2021-06-30	267318
2021-09-30	266641
2021-12-31	292059
2022-03-31	277870
2022-06-30	248686
2022-09-30	262762
2022-12-31	260581
2023-03-31	277559
2023-06-30	268192
2023-09-30	253937