Quarterly US dollars
1986-09-30 178
1986-12-31 165
1987-03-31 300
1987-06-30 169
1987-09-30 149
1987-12-31 221
1988-03-31 274
1988-06-30 198
1988-09-30 172
1988-12-31 440
1989-03-31 386
1989-06-30 491
1989-09-30 254
1989-12-31 671
1990-03-31 648
1990-06-30 596
1990-09-30 615
1990-12-31 489
1991-03-31 432
1991-06-30 728
1991-09-30 747
1991-12-31 1413
1992-03-31 1681
1992-06-30 1907
1992-09-30 1767
1992-12-31 1478
1993-03-31 1463
1993-06-30 1151
1993-09-30 1164
1993-12-31 1167
1994-03-31 1105
1994-06-30 1163
1994-09-30 1172
1994-12-31 1149
1995-03-31 1198
1995-06-30 1421
1995-09-30 1572
1995-12-31 1425
1996-03-31 1449
1996-06-30 1631
1996-09-30 1453
1996-12-31 1434
1997-03-31 1422
1997-06-30 1411
1997-09-30 1123
1997-12-31 1093
1998-03-31 1143
1998-06-30 1286
1998-09-30 1539
1998-12-31 1580
1999-03-31 1524
1999-06-30 1381
1999-09-30 1360
1999-12-31 1365
2000-03-31 1609
2000-06-30 1474
2000-09-30 1438
2000-12-31 1364
2001-03-31 1325
2001-06-30 1220
2001-09-30 1253
2001-12-31 1217
2002-03-31 1697
2002-06-30 1553
2002-09-30 1803
2002-12-31 2008
2003-03-31 2596
2003-06-30 2765
2003-09-30 3116
2003-12-31 3537
2004-03-31 4150
2004-06-30 4474
2004-09-30 5082
2004-12-31 5275
2005-03-31 5692
2005-06-30 5722
2005-09-30 5833
2005-12-31 6312
2006-03-31 6167
2006-06-30 5979
2006-09-30 5733
2006-12-31 5194
2007-03-31 4705
2007-06-30 4297
2007-09-30 4654
2007-12-31 4493
2008-03-31 4487
2008-06-30 3474
2008-09-30 2902
2008-12-31 2405
2009-03-31 2129
2009-06-30 2032
2009-09-30 1908
2009-12-31 2049
2010-03-31 2021
2010-06-30 1766
2010-09-30 1479
2010-12-31 1357
2011-03-31 1380
2011-06-30 1018
2011-09-30 974
2011-12-31 857
2012-03-31 651
2012-06-30 548
2012-09-30 518
2012-12-31 475
2013-03-31 460
2013-06-30 215
2013-09-30 213
2013-12-31 189
2014-03-31 183
2014-06-30 143
2014-09-30 126
2014-12-31 103
2015-03-31 85
2015-06-30 72
2015-09-30 114
2015-12-31 56
2016-03-31 52
2016-06-30 103
2016-09-30 38
2016-12-31 18
2017-03-31 25
2017-06-30 17
2017-09-30 22
2017-12-31 81
2018-03-31 16
2018-06-30 12
2018-09-30 10
2018-12-31 39
2019-03-31 10
2019-06-30 10
2019-09-30 35
2019-12-31 10
2020-03-31 9
2020-06-30 9
2020-09-30 10
2020-12-31 10
2021-03-31 10
2021-06-30 9
2021-09-30 17
2021-12-31 27
2022-03-31 76
2022-06-30 62
2022-09-30 82
2022-12-31 60
2023-03-31 68
2023-06-30 67
2023-09-30 17