Quarterly US dollars
1986-09-30 93
1986-12-31 90
1987-03-31 74
1987-06-30 127
1987-09-30 112
1987-12-31 154
1988-03-31 217
1988-06-30 364
1988-09-30 394
1988-12-31 286
1989-03-31 351
1989-06-30 226
1989-09-30 310
1989-12-31 330
1990-03-31 319
1990-06-30 302
1990-09-30 298
1990-12-31 293
1991-03-31 298
1991-06-30 304
1991-09-30 313
1991-12-31 262
1992-03-31 314
1992-06-30 364
1992-09-30 317
1992-12-31 266
1993-03-31 276
1993-06-30 280
1993-09-30 150
1993-12-31 326
1994-03-31 245
1994-06-30 440
1994-09-30 411
1994-12-31 446
1995-03-31 617
1995-06-30 229
1995-09-30 542
1995-12-31 1016
1996-03-31 1033
1996-06-30 1353
1996-09-30 1430
1996-12-31 1325
1997-03-31 1366
1997-06-30 1626
1997-09-30 2288
1997-12-31 3081
1998-03-31 2569
1998-06-30 2910
1998-09-30 2654
1998-12-31 4795
1999-03-31 4880
1999-06-30 5049
1999-09-30 5437
1999-12-31 4881
2000-03-31 5070
2000-06-30 5087
2000-09-30 5087
2000-12-31 5299
2001-03-31 5478
2001-06-30 5769
2001-09-30 6142
2001-12-31 5741
2002-03-31 5251
2002-06-30 5426
2002-09-30 4243
2002-12-31 4110
2003-03-31 4159
2003-06-30 4162
2003-09-30 3932
2003-12-31 4044
2004-03-31 4441
2004-06-30 4246
2004-09-30 4587
2004-12-31 4480
2005-03-31 4615
2005-06-30 5203
2005-09-30 9943
2005-12-31 9707
2006-03-31 10171
2006-06-30 10151
2006-09-30 10342
2006-12-31 10660
2007-03-31 10343
2007-06-30 10209
2007-09-30 10297
2007-12-31 10561
2008-03-31 10574
2008-06-30 10413
2008-09-30 8133
2008-12-31 5663
2009-03-31 6227
2009-06-30 6313
2009-09-30 8071
2009-12-31 7848
2010-03-31 8619
2010-06-30 8614
2010-09-30 8578
2010-12-31 9151
2011-03-31 9500
2011-06-30 8319
2011-09-30 8631
2011-12-31 8238
2012-03-31 6157
2012-06-30 5155
2012-09-30 5324
2012-12-31 5807
2013-03-31 5478
2013-06-30 5929
2013-09-30 5702
2013-12-31 5370
2014-03-31 6426
2014-06-30 6708
2014-09-30 7320
2014-12-31 6715
2015-03-31 7654
2015-06-30 9170
2015-09-30 8841
2015-12-31 6041
2016-03-31 5083
2016-06-30 3574
2016-09-30 4167
2016-12-31 5213
2017-03-31 5967
2017-06-30 4931
2017-09-30 5245
2017-12-31 5210
2018-03-31 7185
2018-06-30 6758
2018-09-30 6308
2018-12-31 4480
2019-03-31 3804
2019-06-30 4986
2019-09-30 5016
2019-12-31 5484
2020-03-31 5542
2020-06-30 5372
2020-09-30 5650
2020-12-31 5519
2021-03-31 5698
2021-06-30 7293
2021-09-30 8125
2021-12-31 9908
2022-03-31 11063
2022-06-30 13885
2022-09-30 13846
2022-12-31 13426
2023-03-31 13606
2023-06-30 14340
2023-09-30 13226