Quarter	US dollars
2007-06-30	297
2007-09-30	805
2007-12-31	1084
2008-03-31	1278
2008-06-30	1342
2008-09-30	1368
2008-12-31	1604
2009-03-31	1512
2009-06-30	1528
2009-09-30	1573
2009-12-31	1530
2010-03-31	1398
2010-06-30	1257
2010-09-30	1314
2010-12-31	1237
2011-03-31	1338
2011-06-30	1290
2011-09-30	1234
2011-12-31	1053
2012-03-31	1071
2012-06-30	903
2012-09-30	935
2012-12-31	953
2013-03-31	1173
2013-06-30	1128
2013-09-30	1229
2013-12-31	1240
2014-03-31	1179
2014-06-30	1193
2014-09-30	1035
2014-12-31	840
2015-03-31	849
2015-06-30	875
2015-09-30	714
2015-12-31	648
2016-03-31	696
2016-06-30	664
2016-09-30	666
2016-12-31	605
2017-03-31	585
2017-06-30	731
2017-09-30	770
2017-12-31	720
2018-03-31	718
2018-06-30	668
2018-09-30	668
2018-12-31	548
2019-03-31	411
2019-06-30	529
2019-09-30	905
2019-12-31	1071
2020-03-31	718
2020-06-30	832
2020-09-30	936
2020-12-31	888
2021-03-31	859
2021-06-30	692
2021-09-30	637
2021-12-31	597
2022-03-31	589
2022-06-30	313
2022-09-30	423
2022-12-31	470
2023-03-31	447
2023-06-30	473
2023-09-30	494