Quarter	US dollars
2004-12-31	1046
2005-03-31	1070
2005-06-30	1061
2005-09-30	863
2005-12-31	1097
2006-03-31	1100
2006-06-30	1250
2006-09-30	1209
2006-12-31	1217
2007-03-31	1196
2007-06-30	1222
2007-09-30	1275
2007-12-31	1322
2008-03-31	1397
2008-06-30	1457
2008-09-30	1411
2008-12-31	1484
2009-03-31	1439
2009-06-30	1512
2009-09-30	1507
2009-12-31	1492
2010-03-31	1459
2010-06-30	1478
2010-09-30	1594
2010-12-31	1641
2011-03-31	1638
2011-06-30	1808
2011-09-30	1804
2011-12-31	2024
2012-03-31	2095
2012-06-30	2097
2012-09-30	2161
2012-12-31	2375
2013-03-31	2673
2013-06-30	2607
2013-09-30	2630
2013-12-31	2580
2014-03-31	2543
2014-06-30	2578
2014-09-30	2463
2014-12-31	2422
2015-03-31	2362
2015-06-30	2289
2015-09-30	2602
2015-12-31	2002
2016-03-31	2000
2016-06-30	1840
2016-09-30	1793
2016-12-31	1323
2017-03-31	1151
2017-06-30	970
2017-09-30	625
2017-12-31	428
2018-03-31	627
2018-06-30	959
2018-09-30	835
2018-12-31	882
2019-03-31	843
2019-06-30	836
2019-09-30	824
2019-12-31	873
2020-03-31	735
2020-06-30	522
2020-09-30	658
2020-12-31	898
2021-03-31	723
2021-06-30	709
2021-09-30	716
2021-12-31	899
2022-03-31	745
2022-06-30	684
2022-09-30	685
2022-12-31	717
2023-03-31	652
2023-06-30	678
2023-09-30	631