Quarter	US dollars
2004-12-31	831
2005-03-31	911
2005-06-30	1038
2005-09-30	2515
2005-12-31	2917
2006-03-31	1689
2006-06-30	1792
2006-09-30	1726
2006-12-31	2116
2007-03-31	2397
2007-06-30	2919
2007-09-30	5022
2007-12-31	5716
2008-03-31	2274
2008-06-30	1847
2008-09-30	2393
2008-12-31	1328
2009-03-31	1165
2009-06-30	935
2009-09-30	884
2009-12-31	1360
2010-03-31	1197
2010-06-30	3811
2010-09-30	4142
2010-12-31	3676
2011-03-31	3470
2011-06-30	3439
2011-09-30	3013
2011-12-31	2794
2012-03-31	1318
2012-06-30	1144
2012-09-30	1374
2012-12-31	1310
2013-03-31	4191
2013-06-30	4186
2013-09-30	3854
2013-12-31	3473
2014-03-31	3265
2014-06-30	3076
2014-09-30	2857
2014-12-31	3451
2015-03-31	3871
2015-06-30	4019
2015-09-30	3696
2015-12-31	3906
2016-03-31	3711
2016-06-30	2725
2016-09-30	2263
2016-12-31	1897
2017-03-31	658
2017-06-30	1159
2017-09-30	2134
2017-12-31	1798
2018-03-31	2374
2018-06-30	2093
2018-09-30	1283
2018-12-31	1957
2019-03-31	2219
2019-06-30	2071
2019-09-30	2448
2019-12-31	2547
2020-03-31	2617
2020-06-30	3102
2020-09-30	3668
2020-12-31	3147
2021-03-31	3296
2021-06-30	2163
2021-09-30	2385
2021-12-31	2280
2022-03-31	2471
2022-06-30	2432
2022-09-30	2544
2022-12-31	1943
2023-03-31	1872
2023-06-30	1835
2023-09-30	2211