Quarter	US dollars
2004-12-31	570
2005-03-31	578
2005-06-30	600
2005-09-30	585
2005-12-31	700
2006-03-31	696
2006-06-30	804
2006-09-30	809
2006-12-31	865
2007-03-31	1149
2007-06-30	1075
2007-09-30	1082
2007-12-31	916
2008-03-31	1109
2008-06-30	1095
2008-09-30	1372
2008-12-31	760
2009-03-31	1095
2009-06-30	1123
2009-09-30	1959
2009-12-31	2007
2010-03-31	1532
2010-06-30	1496
2010-09-30	1470
2010-12-31	1468
2011-03-31	1462
2011-06-30	1468
2011-09-30	1390
2011-12-31	1238
2012-03-31	1290
2012-06-30	1250
2012-09-30	1113
2013-06-30	1189
2013-09-30	1234
2014-03-31	1110
2014-06-30	222
2014-09-30	233
2014-12-31	222
2015-03-31	211
2015-06-30	211
2015-09-30	220
2015-12-31	227
2016-03-31	148
2016-06-30	184
2016-09-30	155
2016-12-31	188
2017-03-31	328
2017-06-30	534
2017-09-30	581
2017-12-31	569
2018-03-31	602
2018-06-30	581
2018-09-30	583
2018-12-31	524
2019-03-31	589
2019-06-30	677
2019-09-30	630
2019-12-31	576
2020-03-31	473
2020-06-30	471
2020-09-30	443
2020-12-31	414
2021-03-31	419
2021-06-30	499
2021-09-30	414
2021-12-31	446
2022-03-31	392
2022-06-30	425
2022-09-30	391
2022-12-31	379
2023-03-31	355
2023-06-30	331
2023-09-30	2