Quarter	US dollars
2004-12-31	132181
2005-03-31	133120
2005-06-30	115763
2005-09-30	121208
2005-12-31	136164
2006-03-31	140609
2006-06-30	149609
2006-09-30	146869
2006-12-31	183210
2007-03-31	178765
2007-06-30	183232
2007-09-30	190631
2007-12-31	188733
2008-03-31	213448
2008-06-30	199653
2008-09-30	191424
2008-12-31	143138
2009-03-31	139200
2009-06-30	138819
2009-09-30	120365
2009-12-31	118597
2010-03-31	88240
2010-06-30	75148
2010-09-30	79103
2010-12-31	73270
2011-03-31	66315
2011-06-30	63795
2011-09-30	47631
2011-12-31	47974
2012-03-31	41312
2012-06-30	44183
2012-09-30	47294
2012-12-31	49704
2013-03-31	46115
2013-06-30	47926
2013-09-30	48827
2013-12-31	45806
2014-03-31	51340
2014-06-30	52943
2014-09-30	56243
2014-12-31	55085
2015-03-31	38624
2015-06-30	36870
2015-09-30	37551
2015-12-31	36833
2016-03-31	43233
2016-06-30	40458
2016-09-30	40688
2016-12-31	41434
2017-03-31	42362
2017-06-30	50936
2017-09-30	46481
2017-12-31	53348
2018-03-31	61595
2018-06-30	60443
2018-09-30	57965
2018-12-31	59910
2019-03-31	75222
2019-06-30	74780
2019-09-30	69634
2019-12-31	69956
2020-03-31	66843
2020-06-30	71174
2020-09-30	68933
2020-12-31	67796
2021-03-31	73366
2021-06-30	69566
2021-09-30	70133
2021-12-31	75018
2022-03-31	77878
2022-06-30	74753
2022-09-30	68464
2022-12-31	63747
2023-03-31	62174
2023-06-30	61833
2023-09-30	66676