Quarter	US dollars
2004-12-31	453
2005-03-31	476
2005-06-30	276
2005-09-30	258
2005-12-31	239
2006-03-31	349
2006-06-30	494
2006-09-30	383
2006-12-31	1074
2007-03-31	1083
2007-06-30	1001
2007-09-30	1290
2007-12-31	1392
2008-03-31	1471
2008-06-30	1528
2008-09-30	1445
2008-12-31	1481
2009-03-31	1167
2009-06-30	1214
2009-09-30	1399
2009-12-31	1263
2010-03-31	1148
2010-06-30	1586
2010-09-30	1380
2010-12-31	1871
2011-03-31	2316
2011-06-30	2368
2011-09-30	2720
2011-12-31	2299
2012-03-31	2079
2012-06-30	2168
2012-09-30	2053
2012-12-31	2411
2013-03-31	2578
2013-06-30	2108
2013-09-30	1474
2013-12-31	1033
2014-03-31	812
2014-06-30	995
2014-09-30	1068
2014-12-31	1166
2015-03-31	1366
2015-06-30	1444
2015-09-30	1281
2015-12-31	1271
2016-03-31	1366
2016-06-30	1281
2016-09-30	1213
2016-12-31	1056
2017-03-31	1144
2017-06-30	1044
2017-09-30	973
2017-12-31	932
2018-03-31	1002
2018-06-30	1071
2018-09-30	897
2018-12-31	918
2019-03-31	827
2019-06-30	877
2019-09-30	731
2019-12-31	798
2020-03-31	628
2020-06-30	488
2020-09-30	394
2020-12-31	441
2021-03-31	281
2021-06-30	413
2021-09-30	260
2021-12-31	309
2022-03-31	359
2022-06-30	371
2022-09-30	279
2022-12-31	465
2023-03-31	272
2023-06-30	410
2023-09-30	434