Quarter	US dollars
2004-12-31	820
2005-03-31	1085
2005-06-30	830
2005-09-30	851
2005-12-31	999
2006-03-31	1008
2006-06-30	943
2006-09-30	1085
2006-12-31	1102
2007-03-31	932
2007-06-30	1023
2007-09-30	1084
2007-12-31	1077
2008-03-31	1181
2008-06-30	1019
2008-09-30	968
2008-12-31	886
2009-03-31	887
2009-06-30	817
2009-09-30	739
2009-12-31	767
2010-03-31	781
2010-06-30	1215
2010-09-30	844
2010-12-31	1083
2011-03-31	1151
2011-06-30	938
2011-09-30	718
2011-12-31	940
2012-03-31	845
2012-06-30	872
2012-09-30	883
2012-12-31	838
2013-03-31	856
2013-06-30	830
2013-09-30	588
2013-12-31	626
2014-03-31	519
2014-06-30	692
2014-09-30	679
2014-12-31	841
2015-03-31	750
2015-06-30	758
2015-09-30	706
2015-12-31	699
2016-03-31	690
2016-06-30	737
2016-09-30	785
2016-12-31	823
2017-03-31	883
2017-06-30	633
2017-09-30	656
2017-12-31	688
2018-03-31	742
2018-06-30	650
2018-09-30	673
2018-12-31	793
2019-03-31	1050
2019-06-30	1009
2019-09-30	711
2019-12-31	748
2020-03-31	657
2020-06-30	656
2020-09-30	616
2020-12-31	696
2021-03-31	1039
2021-06-30	1077
2021-09-30	1111
2021-12-31	1093
2022-03-31	1186
2022-06-30	1081
2022-09-30	956
2022-12-31	898
2023-03-31	892
2023-06-30	859
2023-09-30	684