Quarter	US dollars
2004-12-31	24043
2005-03-31	27745
2005-06-30	25220
2005-09-30	33687
2005-12-31	40852
2006-03-31	45024
2006-06-30	50914
2006-09-30	53804
2006-12-31	56391
2007-03-31	62501
2007-06-30	57142
2007-09-30	74536
2007-12-31	66223
2008-03-31	82587
2008-06-30	78490
2008-09-30	68509
2008-12-31	52390
2009-03-31	46364
2009-06-30	47028
2009-09-30	55507
2009-12-31	60544
2010-03-31	77059
2010-06-30	77828
2010-09-30	84707
2010-12-31	97864
2011-03-31	106915
2011-06-30	116303
2011-09-30	120888
2011-12-31	119104
2012-03-31	131874
2012-06-30	131767
2012-09-30	123070
2012-12-31	118345
2013-03-31	137339
2013-06-30	138799
2013-09-30	148386
2013-12-31	139123
2014-03-31	157782
2014-06-30	149800
2014-09-30	141626
2014-12-31	122715
2015-03-31	128041
2015-06-30	114646
2015-09-30	97424
2015-12-31	88618
2016-03-31	87297
2016-06-30	84588
2016-09-30	87287
2016-12-31	85240
2017-03-31	91625
2017-06-30	97570
2017-09-30	103380
2017-12-31	99769
2018-03-31	103975
2018-06-30	106094
2018-09-30	102161
2018-12-31	100755
2019-03-31	102549
2019-06-30	102603
2019-09-30	91989
2019-12-31	85666
2020-03-31	98930
2020-06-30	84848
2020-09-30	85615
2020-12-31	91597
2021-03-31	96713
2021-06-30	93657
2021-09-30	90799
2021-12-31	96998
2022-03-31	93154
2022-06-30	91857
2022-09-30	97838
2022-12-31	98098
2023-03-31	100915
2023-06-30	106961
2023-09-30	111483