Quarter	US dollars
2004-12-31	561
2005-03-31	760
2005-06-30	640
2005-09-30	830
2005-12-31	505
2006-03-31	722
2006-06-30	546
2006-09-30	536
2006-12-31	994
2007-03-31	1008
2007-06-30	899
2007-09-30	1100
2007-12-31	1193
2008-03-31	1284
2008-06-30	1427
2008-09-30	1337
2008-12-31	1169
2009-03-31	999
2009-06-30	1093
2009-09-30	1172
2009-12-31	1132
2010-03-31	1089
2010-06-30	1891
2010-09-30	1846
2010-12-31	2458
2011-03-31	2690
2011-06-30	2855
2011-09-30	2687
2011-12-31	2049
2012-03-31	2132
2012-06-30	2343
2012-09-30	1975
2012-12-31	1753
2013-03-31	1524
2013-06-30	1374
2013-09-30	1896
2013-12-31	1983
2014-03-31	1702
2014-06-30	1749
2014-09-30	1320
2014-12-31	1316
2015-03-31	776
2015-06-30	755
2015-09-30	869
2015-12-31	664
2016-03-31	717
2016-06-30	612
2016-09-30	716
2016-12-31	700
2017-03-31	643
2017-06-30	812
2017-09-30	1095
2017-12-31	923
2018-03-31	827
2018-06-30	907
2018-09-30	784
2018-12-31	861
2019-03-31	687
2019-06-30	673
2019-09-30	622
2019-12-31	493
2020-03-31	471
2020-06-30	416
2020-09-30	357
2020-12-31	367
2021-03-31	404
2021-06-30	427
2021-09-30	394
2021-12-31	792
2022-03-31	529
2022-06-30	478
2022-09-30	402
2022-12-31	475
2023-03-31	493
2023-06-30	518
2023-09-30	541