Quarter	US dollars
2004-12-31	1029
2005-03-31	992
2005-06-30	903
2005-09-30	941
2005-12-31	815
2006-03-31	916
2006-06-30	829
2006-09-30	917
2006-12-31	1121
2007-03-31	1083
2007-06-30	1174
2007-09-30	1646
2007-12-31	1551
2008-03-31	1825
2008-06-30	2697
2008-09-30	2208
2008-12-31	2023
2009-03-31	2078
2009-06-30	1085
2009-09-30	1310
2009-12-31	1655
2010-03-31	1532
2010-06-30	1855
2010-09-30	1552
2010-12-31	2855
2011-03-31	3815
2011-06-30	14950
2011-09-30	16204
2011-12-31	9247
2012-03-31	8080
2012-06-30	5672
2012-09-30	5413
2012-12-31	6204
2013-03-31	7420
2013-06-30	7144
2013-09-30	7226
2013-12-31	8173
2014-03-31	8982
2014-06-30	7244
2014-09-30	6598
2014-12-31	5319
2015-03-31	1832
2015-06-30	2153
2015-09-30	2221
2015-12-31	1691
2016-03-31	1336
2016-06-30	941
2016-09-30	678
2016-12-31	546
2017-03-31	715
2017-06-30	2115
2017-09-30	832
2017-12-31	1029
2018-03-31	1297
2018-06-30	961
2018-09-30	1102
2018-12-31	1045
2019-03-31	1926
2019-06-30	2280
2019-09-30	1897