Quarter	US dollars
2004-12-31	3550
2005-03-31	3267
2005-06-30	3008
2005-09-30	1309
2005-12-31	1444
2006-03-31	1339
2006-06-30	1326
2006-09-30	1315
2006-12-31	1264
2007-03-31	1351
2007-06-30	1431
2007-09-30	1430
2007-12-31	1320
2008-03-31	1355
2008-06-30	1323
2008-09-30	1338
2008-12-31	955
2009-03-31	920
2009-06-30	983
2009-09-30	1158
2009-12-31	1284
2010-03-31	1271
2010-06-30	1204
2010-09-30	1174
2010-12-31	1122
2011-03-31	928
2011-06-30	918
2011-09-30	1131
2011-12-31	861
2012-03-31	866
2012-06-30	847
2012-09-30	975
2012-12-31	930
2013-03-31	1079
2013-06-30	1071
2013-09-30	923
2013-12-31	886
2014-03-31	1070
2014-06-30	1091
2014-09-30	1015
2014-12-31	997
2015-03-31	975
2015-06-30	1021
2015-09-30	897
2015-12-31	999
2016-03-31	969
2016-06-30	924
2016-09-30	874
2016-12-31	892
2017-03-31	1108
2017-06-30	1151
2017-09-30	1171
2017-12-31	1235
2018-03-31	1208
2018-06-30	1142
2018-09-30	1017
2018-12-31	963
2019-03-31	1032
2019-06-30	1037
2019-09-30	1206
2019-12-31	1184
2020-03-31	765
2020-06-30	1095
2020-09-30	1369
2020-12-31	1257
2021-03-31	1403
2021-06-30	1324
2021-09-30	1168
2021-12-31	1123
2022-03-31	1152
2022-06-30	1038
2022-09-30	1116
2022-12-31	1289
2023-03-31	1439
2023-06-30	1171
2023-09-30	1337