Quarter	US dollars
2004-12-31	1221
2005-03-31	1095
2005-06-30	1154
2005-09-30	1049
2005-12-31	1136
2006-03-31	1145
2006-06-30	1529
2006-09-30	1547
2006-12-31	1571
2007-03-31	1620
2007-06-30	1814
2007-09-30	2414
2007-12-31	2576
2008-03-31	2292
2008-06-30	2225
2008-09-30	2174
2008-12-31	1932
2009-03-31	1969
2009-06-30	2170
2009-09-30	2087
2009-12-31	1947
2010-03-31	1984
2010-06-30	1908
2010-09-30	2017
2010-12-31	2084
2011-03-31	2065
2011-06-30	2052
2011-09-30	1651
2011-12-31	1664
2012-03-31	2336
2012-06-30	1931
2012-09-30	2017
2012-12-31	2108
2013-03-31	2163
2013-06-30	2045
2013-09-30	2053
2013-12-31	2497
2014-03-31	2469
2014-06-30	2411
2014-09-30	1222
2014-12-31	1327
2015-03-31	1170
2015-06-30	1279
2015-09-30	1104
2015-12-31	1113
2016-03-31	1060
2016-06-30	884
2016-09-30	878
2016-12-31	923
2017-03-31	890
2017-06-30	963
2017-09-30	961
2017-12-31	839
2018-03-31	907
2018-06-30	879
2018-09-30	852
2018-12-31	858
2019-03-31	810
2019-06-30	868
2019-09-30	803
2019-12-31	919
2020-03-31	894
2020-06-30	807
2020-09-30	835
2020-12-31	874
2021-03-31	880
2021-06-30	826
2021-09-30	785
2021-12-31	771
2022-03-31	749
2022-06-30	693
2022-09-30	670
2022-12-31	650
2023-03-31	671
2023-06-30	696
2023-09-30	624