Quarter	US dollars
2004-12-31	115
2005-03-31	112
2005-06-30	181
2005-09-30	225
2005-12-31	216
2006-03-31	250
2006-06-30	309
2006-09-30	241
2006-12-31	196
2007-03-31	284
2007-06-30	377
2007-09-30	348
2007-12-31	398
2008-03-31	570
2008-06-30	762
2008-09-30	765
2008-12-31	645
2009-03-31	711
2009-06-30	861
2009-09-30	1016
2009-12-31	1045
2010-03-31	1204
2010-06-30	1312
2010-09-30	1514
2010-12-31	1498
2011-03-31	1690
2011-06-30	1716
2011-09-30	1584
2011-12-31	1529
2012-03-31	1590
2012-06-30	1347
2012-09-30	1368
2012-12-31	1424
2013-03-31	1612
2013-06-30	1614
2013-09-30	1579
2013-12-31	1889
2014-03-31	1761
2014-06-30	1881
2014-09-30	1944
2014-12-31	1923
2015-03-31	1792
2015-06-30	1763
2015-09-30	1341
2015-12-31	1400
2016-03-31	1455
2016-06-30	1355
2016-09-30	1410
2016-12-31	1275
2017-03-31	1480
2017-06-30	1526
2017-09-30	1619
2017-12-31	1639
2018-03-31	1322
2018-06-30	1401
2018-09-30	1262
2018-12-31	1301
2019-03-31	1141
2019-06-30	1154
2019-09-30	1067
2019-12-31	1089
2020-03-31	1193
2020-06-30	1198
2020-09-30	1428
2020-12-31	1389
2021-03-31	1320
2021-06-30	1347
2021-09-30	1339
2021-12-31	1420
2022-03-31	1149
2022-06-30	973
2022-09-30	973
2022-12-31	915
2023-03-31	789
2023-06-30	718
2023-09-30	603