Quarter	US dollars
2004-12-31	37448
2005-03-31	42027
2005-06-30	41767
2005-09-30	51371
2005-12-31	56195
2006-03-31	63793
2006-06-30	72639
2006-09-30	77577
2006-12-31	85570
2007-03-31	93676
2007-06-30	92050
2007-09-30	113265
2007-12-31	113686
2008-03-31	142903
2008-06-30	134551
2008-09-30	127805
2008-12-31	97347
2009-03-31	84665
2009-06-30	84947
2009-09-30	88317
2009-12-31	90939
2010-03-31	104634
2010-06-30	108483
2010-09-30	116014
2010-12-31	135849
2011-03-31	145434
2011-06-30	174975
2011-09-30	176619
2011-12-31	167161
2012-03-31	182316
2012-06-30	181918
2012-09-30	169715
2012-12-31	159902
2013-03-31	186318
2013-06-30	185890
2013-09-30	200721
2013-12-31	192087
2014-03-31	208306
2014-06-30	205104
2014-09-30	197688
2014-12-31	181062
2015-03-31	179900
2015-06-30	160234
2015-09-30	147873
2015-12-31	129444
2016-03-31	124268
2016-06-30	115031
2016-09-30	112888
2016-12-31	108875
2017-03-31	108936
2017-06-30	119407
2017-09-30	126309
2017-12-31	123929
2018-03-31	130065
2018-06-30	127697
2018-09-30	127446
2018-12-31	125961
2019-03-31	132015
2019-06-30	132854
2019-09-30	123386
2019-12-31	122166
2020-03-31	127618
2020-06-30	114656
2020-09-30	112076
2020-12-31	124954
2021-03-31	127948
2021-06-30	128250
2021-09-30	125311
2021-12-31	134438
2022-03-31	133690
2022-06-30	133703
2022-09-30	135500
2022-12-31	133236
2023-03-31	137760
2023-06-30	141922
2023-09-30	146435