Quarterly US dollars
1999-09-30 62684
1999-12-31 62537
2000-03-31 60962
2000-06-30 74120
2000-09-30 83885
2000-12-31 94125
2001-03-31 117205
2001-06-30 100599
2001-09-30 126293
2001-12-31 136111
2002-03-31 104725
2002-06-30 171962
2002-09-30 218264
2002-12-31 243549
2003-03-31 248573
2003-06-30 295289
2003-09-30 281313
2003-12-31 278107
2004-03-31 290279
2004-06-30 225555
2004-09-30 259244
2004-12-31 293203
2005-03-31 275089
2005-06-30 353418
2005-09-30 332987
2005-12-31 301979
2006-03-31 308382
2006-06-30 378585
2006-09-30 304362
2006-12-31 290701
2007-03-31 377772
2007-06-30 514282
2007-09-30 580775
2007-12-31 736406
2008-03-31 1192341
2008-06-30 1241649
2008-09-30 1147697
2008-12-31 2117746
2009-03-31 1511443
2009-06-30 1091797
2009-09-30 1082724
2009-12-31 903041
2010-03-31 902729
2010-06-30 1008995
2010-09-30 1168375
2010-12-31 992851
2011-03-31 784745
2011-06-30 850305
2011-09-30 1154004
2011-12-31 1062771
2012-03-31 1003238
2012-06-30 965658
2012-09-30 761241
2012-12-31 755765
2013-03-31 699530
2013-06-30 600695
2013-09-30 535778
2013-12-31 509725
2014-03-31 402900
2014-06-30 600043
2014-09-30 634385
2014-12-31 732774
2015-03-31 775333
2015-06-30 599415
2015-09-30 634064
2015-12-31 547457
2016-03-31 648556
2016-06-30 677934
2016-09-30 609077
2016-12-31 499753
2017-03-31 401925
2017-06-30 390529
2017-09-30 379175
2017-12-31 373388
2018-03-31 366559
2018-06-30 282643
2018-09-30 319699
2018-12-31 336991
2019-03-31 335016
2019-06-30 370877
2019-09-30 459408
2019-12-31 391214
2020-03-31 558066
2020-06-30 493327
2020-09-30 490472
2020-12-31 516882
2021-03-31 443088
2021-06-30 389001
2021-09-30 366490
2021-12-31 356185
2022-03-31 378263
2022-06-30 423058
2022-09-30 489817
2022-12-31 383958
2023-03-31 334698
2023-06-30 359851
2023-09-30 372408