Quarterly US dollars
1999-03-31 1444
1999-06-30 1328
1999-09-30 1453
1999-12-31 1452
2000-03-31 1529
2000-06-30 1438
2000-09-30 1510
2000-12-31 1481
2001-03-31 1466
2001-06-30 1402
2001-09-30 1409
2001-12-31 1397
2002-03-31 1105
2002-06-30 1032
2002-09-30 932
2002-12-31 986
2003-03-31 942
2003-06-30 866
2003-09-30 897
2003-12-31 837
2004-03-31 952
2004-06-30 962
2004-09-30 991
2004-12-31 1008
2005-03-31 1293
2005-06-30 1722
2005-09-30 1714
2005-12-31 1718
2006-03-31 1414
2006-06-30 1429
2006-09-30 1432
2006-12-31 1559
2007-03-31 1597
2007-06-30 1678
2007-09-30 1752
2007-12-31 1721
2008-03-31 1855
2008-06-30 1861
2008-09-30 1830
2008-12-31 1804
2009-03-31 1833
2009-06-30 1838
2009-09-30 1764
2009-12-31 1760
2010-03-31 1843
2010-06-30 1837
2010-09-30 1866
2010-12-31 1800
2011-03-31 1730
2011-06-30 1774
2011-09-30 1807
2011-12-31 1935
2012-03-31 2004
2012-06-30 1983
2012-09-30 2074
2012-12-31 1940
2013-03-31 1988
2013-06-30 1848
2013-09-30 1748
2013-12-31 1725
2014-03-31 1736
2014-06-30 1457
2014-09-30 1484
2014-12-31 1408
2015-03-31 1429
2015-06-30 1364
2015-09-30 1329
2015-12-31 1386
2016-03-31 1646
2016-06-30 2589
2016-09-30 2632
2016-12-31 2570
2017-03-31 2489
2017-06-30 2818
2017-09-30 3786
2017-12-31 3891
2018-03-31 4086
2018-06-30 3758
2018-09-30 3898
2018-12-31 4060
2019-03-31 4178
2019-06-30 4445
2019-09-30 4623
2019-12-31 4457
2020-03-31 4365
2020-06-30 4195
2020-09-30 4282
2020-12-31 4146
2021-03-31 3990
2021-06-30 4074
2021-09-30 3995
2021-12-31 3812
2022-03-31 3686
2022-06-30 3260
2022-09-30 3271
2022-12-31 3045
2023-03-31 3005
2023-06-30 2775
2023-09-30 2718