Quarter	US dollars
2004-12-31	1958
2005-03-31	2433
2005-06-30	2101
2005-09-30	2667
2005-12-31	2269
2006-03-31	4099
2006-06-30	5474
2006-09-30	6092
2006-12-31	5607
2007-03-31	8367
2007-06-30	6577
2007-09-30	8577
2007-12-31	9413
2008-03-31	7340
2008-06-30	5929
2008-09-30	8998
2008-12-31	4027
2009-03-31	5734
2009-06-30	8303
2009-09-30	8137
2009-12-31	7034
2010-03-31	10150
2010-06-30	10207
2010-09-30	14485
2010-12-31	13521
2011-03-31	16787
2011-06-30	17300
2011-09-30	13898
2011-12-31	15348
2012-03-31	19553
2012-06-30	15556
2012-09-30	23800
2012-12-31	23764
2013-03-31	29498
2013-06-30	21255
2013-09-30	18621
2013-12-31	15878
2014-03-31	10384
2014-06-30	11057
2014-09-30	12647
2014-12-31	11079
2015-03-31	9376
2015-06-30	11172
2015-09-30	11029
2015-12-31	7685
2016-03-31	8466
2016-06-30	13224
2016-09-30	15574
2016-12-31	12581
2017-03-31	14667
2017-06-30	13073
2017-09-30	12425
2017-12-31	13736
2018-03-31	13473
2018-06-30	6863
2018-09-30	6597
2018-12-31	6705
2019-03-31	7849
2019-06-30	6981
2019-09-30	6102
2019-12-31	8066
2020-03-31	5006
2020-06-30	6048
2020-09-30	6051
2020-12-31	9115
2021-03-31	6241
2021-06-30	5680
2021-09-30	6135
2021-12-31	7019
2022-03-31	9617
2022-06-30	11183
2022-09-30	13330
2022-12-31	8271
2023-03-31	6987
2023-06-30	7696
2023-09-30	9941