Quarter	US dollars
2004-12-31	1858
2005-03-31	1862
2005-06-30	2194
2005-09-30	2146
2005-12-31	2360
2006-03-31	2211
2006-06-30	2369
2006-09-30	2365
2006-12-31	2663
2007-03-31	2685
2007-06-30	5562
2007-09-30	2500
2007-12-31	2652
2008-03-31	2882
2008-06-30	2703
2008-09-30	2689
2008-12-31	3022
2009-03-31	2985
2009-06-30	2334
2009-09-30	2038
2009-12-31	2261
2010-03-31	2442
2010-06-30	2364
2010-09-30	930
2010-12-31	733
2011-03-31	864
2011-06-30	902
2011-09-30	685
2011-12-31	543
2012-03-31	305
2012-06-30	282
2012-09-30	339
2012-12-31	323
2013-03-31	282
2013-06-30	261
2013-09-30	186
2013-12-31	792
2014-03-31	774
2014-06-30	872
2014-09-30	783
2014-12-31	769
2015-03-31	114
2015-06-30	159
2015-09-30	147
2015-12-31	107
2016-03-31	164
2016-06-30	118
2016-09-30	231
2016-12-31	162
2017-03-31	154
2017-06-30	321
2017-09-30	288
2017-12-31	424
2018-03-31	608
2018-06-30	312
2018-09-30	239
2018-12-31	354
2019-03-31	337
2019-06-30	238
2019-09-30	403
2019-12-31	396
2020-03-31	427
2020-06-30	586
2020-09-30	743
2020-12-31	493
2021-03-31	523
2021-06-30	600
2021-09-30	512
2021-12-31	624
2022-03-31	761
2022-06-30	437
2022-09-30	298
2022-12-31	551
2023-03-31	822
2023-06-30	351
2023-09-30	410