Quarterly US dollars
1999-03-31 3652
1999-06-30 3352
1999-09-30 3425
1999-12-31 4430
2000-03-31 4829
2000-06-30 2265
2000-09-30 2061
2000-12-31 3209
2001-03-31 4793
2001-06-30 5590
2001-09-30 5748
2001-12-31 3936
2002-03-31 4340
2002-06-30 4610
2002-09-30 5550
2002-12-31 6164
2003-03-31 6810
2003-06-30 7054
2003-09-30 8409
2003-12-31 8224
2004-03-31 9873
2004-06-30 8906
2004-09-30 9489
2004-12-31 10812
2005-03-31 9188
2005-06-30 10591
2005-09-30 8643
2005-12-31 11327
2006-03-31 11157
2006-06-30 13645
2006-09-30 12601
2006-12-31 13116
2007-03-31 13041
2007-06-30 16937
2007-09-30 19496
2007-12-31 12470
2008-03-31 14835
2008-06-30 17481
2008-09-30 15957
2008-12-31 8901
2009-03-31 9488
2009-06-30 9340
2009-09-30 11963
2009-12-31 17173
2010-03-31 17164
2010-06-30 17006
2010-09-30 18835
2010-12-31 16984
2011-03-31 18762
2011-06-30 23031
2011-09-30 22880
2011-12-31 21250
2012-03-31 25490
2012-06-30 27890
2012-09-30 27849
2012-12-31 29258
2013-03-31 27581
2013-06-30 28432
2013-09-30 18378
2013-12-31 16343
2014-03-31 17380
2014-06-30 17661
2014-09-30 17324
2014-12-31 16842
2015-03-31 13232
2015-06-30 14224
2015-09-30 8772
2015-12-31 9266
2016-03-31 7024
2016-06-30 6871
2016-09-30 7113
2016-12-31 5551
2017-03-31 5501
2017-06-30 4786
2017-09-30 3559
2017-12-31 3499
2018-03-31 3049
2018-06-30 3400
2018-09-30 2451
2018-12-31 2577
2019-03-31 1268
2019-06-30 1326
2019-09-30 1133
2019-12-31 1255
2020-03-31 1489
2020-06-30 1579
2020-09-30 1622
2020-12-31 715
2021-03-31 965
2021-06-30 891
2021-09-30 785
2021-12-31 381
2022-03-31 479
2022-06-30 451
2022-09-30 348
2022-12-31 303
2023-03-31 438
2023-06-30 485
2023-09-30 469