Quarter	US dollars
2004-12-31	34706
2005-03-31	33016
2005-06-30	36675
2005-09-30	33181
2005-12-31	36557
2006-03-31	34164
2006-06-30	56140
2006-09-30	42505
2006-12-31	44487
2007-03-31	43082
2007-06-30	43079
2007-09-30	47514
2007-12-31	50921
2008-03-31	69137
2008-06-30	59707
2008-09-30	63224
2008-12-31	46603
2009-03-31	43849
2009-06-30	49215
2009-09-30	53733
2009-12-31	54987
2010-03-31	58402
2010-06-30	74146
2010-09-30	78706
2010-12-31	70410
2011-03-31	50725
2011-06-30	58595
2011-09-30	64573
2011-12-31	56063
2012-03-31	53394
2012-06-30	63569
2012-09-30	54429
2012-12-31	51988
2013-03-31	37858
2013-06-30	48228
2013-09-30	54515
2013-12-31	50409
2014-03-31	58959
2014-06-30	71127
2014-09-30	55166
2014-12-31	46908
2015-03-31	52361
2015-06-30	49035
2015-09-30	46223
2015-12-31	43866
2016-03-31	56031
2016-06-30	63647
2016-09-30	71330
2016-12-31	75841
2017-03-31	69589
2017-06-30	75925
2017-09-30	87208
2017-12-31	83241
2018-03-31	109693
2018-06-30	93241
2018-09-30	104653
2018-12-31	107848
2019-03-31	107260
2019-06-30	120488
2019-09-30	101211
2019-12-31	113101
2020-03-31	134024
2020-06-30	130878
2020-09-30	143407
2020-12-31	125998
2021-03-31	112831
2021-06-30	118759
2021-09-30	127409
2021-12-31	112912
2022-03-31	91740
2022-06-30	104053
2022-09-30	101599
2022-12-31	102877
2023-03-31	123908
2023-06-30	117259
2023-09-30	123892