Quarterly US dollars
1986-09-30 146
1986-12-31 151
1987-03-31 120
1987-06-30 104
1987-09-30 92
1987-12-31 91
1988-03-31 106
1988-06-30 80
1988-09-30 62
1988-12-31 61
1989-03-31 60
1989-06-30 216
1989-09-30 171
1989-12-31 205
1990-03-31 188
1990-06-30 235
1990-09-30 192
1990-12-31 173
1991-03-31 155
1991-06-30 169
1991-09-30 128
1991-12-31 76
1992-03-31 65
1992-06-30 151
1992-09-30 195
1992-12-31 227
1993-03-31 209
1993-06-30 166
1993-09-30 194
1993-12-31 172
1994-03-31 168
1994-06-30 85
1994-09-30 86
1994-12-31 69
1995-03-31 45
1995-06-30 59
1995-09-30 60
1995-12-31 118
1996-03-31 284
1996-06-30 282
1996-09-30 321
1996-12-31 292
1997-03-31 284
1997-06-30 258
1997-09-30 48
1997-12-31 437
1998-03-31 528
1998-06-30 400
1998-09-30 478
1998-12-31 614
1999-03-31 632
1999-06-30 588
1999-09-30 648
1999-12-31 591
2000-03-31 512
2000-06-30 446
2000-09-30 475
2000-12-31 449
2001-03-31 517
2001-06-30 440
2001-09-30 559
2001-12-31 552
2002-03-31 496
2002-06-30 558
2002-09-30 394
2002-12-31 346
2003-03-31 284
2003-06-30 327
2003-09-30 362
2003-12-31 597
2004-03-31 453
2004-06-30 414
2004-09-30 566
2004-12-31 700
2005-03-31 643
2005-06-30 610
2005-09-30 568
2005-12-31 1636
2006-03-31 1696
2006-06-30 1275
2006-09-30 1432
2006-12-31 1307
2007-03-31 1743
2007-06-30 1437
2007-09-30 1664
2007-12-31 1269
2008-03-31 1204
2008-06-30 1392
2008-09-30 3330
2008-12-31 3270
2009-03-31 3249
2009-06-30 3210
2009-09-30 3310
2009-12-31 3530
2010-03-31 3652
2010-06-30 2304
2010-09-30 2003
2010-12-31 1837
2011-03-31 1613
2011-06-30 2308
2011-09-30 1824
2011-12-31 1672
2012-03-31 2204
2012-06-30 3047
2012-09-30 2184
2012-12-31 1463
2013-03-31 1324
2013-06-30 2226
2013-09-30 2914
2013-12-31 1328
2014-03-31 1742
2014-06-30 2618
2014-09-30 1632
2014-12-31 1963
2015-03-31 1983
2015-06-30 2224
2015-09-30 2412
2015-12-31 2183
2016-03-31 1517
2016-06-30 1471
2016-09-30 1588
2016-12-31 3465
2017-03-31 3000
2017-06-30 2829
2017-09-30 2797
2017-12-31 2623
2018-03-31 2776
2018-06-30 2717
2018-09-30 2502
2018-12-31 2540
2019-03-31 2656
2019-06-30 2810
2019-09-30 2808
2019-12-31 2907
2020-03-31 2873
2020-06-30 2763
2020-09-30 2738
2020-12-31 2651
2021-03-31 3040
2021-06-30 3183
2021-09-30 2657
2021-12-31 654
2022-03-31 528
2022-06-30 579
2022-09-30 765
2022-12-31 859
2023-03-31 980
2023-06-30 801
2023-09-30 854