Quarter	US dollars
2004-12-31	2505
2005-03-31	1945
2005-06-30	1631
2005-09-30	1733
2005-12-31	2056
2006-03-31	2520
2006-06-30	2663
2006-09-30	2275
2006-12-31	2703
2007-03-31	3473
2007-06-30	3230
2007-09-30	3806
2007-12-31	4689
2008-03-31	3564
2008-06-30	3676
2008-09-30	3047
2008-12-31	4015
2009-03-31	3511
2009-06-30	3707
2009-09-30	3670
2009-12-31	3493
2010-03-31	3253
2010-06-30	2912
2010-09-30	3244
2010-12-31	2095
2011-03-31	2183
2011-06-30	2346
2011-09-30	1784
2011-12-31	2106
2012-03-31	2357
2012-06-30	2271
2012-09-30	2500
2012-12-31	2521
2013-03-31	2535
2013-06-30	2264
2013-09-30	2219
2013-12-31	2126
2014-03-31	1509
2014-06-30	1306
2014-09-30	1279
2014-12-31	1025
2015-03-31	977
2015-06-30	945
2015-09-30	904
2015-12-31	608
2016-03-31	623
2016-06-30	606
2016-09-30	596
2016-12-31	604
2017-03-31	464
2017-06-30	569
2017-09-30	506
2017-12-31	519
2018-03-31	441
2018-06-30	413
2018-09-30	541
2018-12-31	416
2019-03-31	623
2019-06-30	645
2019-09-30	814
2019-12-31	708
2020-03-31	664
2020-06-30	750
2020-09-30	691
2020-12-31	771
2021-03-31	553
2021-06-30	499
2021-09-30	572
2021-12-31	547
2022-03-31	491
2022-06-30	391
2022-09-30	524
2022-12-31	559
2023-03-31	792
2023-06-30	753
2023-09-30	764