Quarterly US dollars
1986-09-30 12
1986-12-31 13
1987-03-31 12
1987-06-30 13
1987-09-30 13
1987-12-31 14
1988-03-31 15
1988-06-30 15
1988-09-30 17
1988-12-31 19
1989-03-31 15
1989-06-30 18
1989-09-30 17
1989-12-31 18
1990-03-31 18
1990-06-30 25
1990-09-30 22
1990-12-31 26
1991-03-31 40
1991-06-30 33
1991-09-30 32
1991-12-31 34
1992-03-31 53
1992-06-30 48
1992-09-30 54
1992-12-31 38
1993-03-31 56
1993-06-30 54
1993-09-30 50
1993-12-31 49
1994-03-31 48
1994-06-30 41
1994-09-30 51
1994-12-31 42
1995-03-31 50
1995-06-30 51
1995-09-30 49
1995-12-31 54
1996-03-31 90
1996-06-30 81
1996-09-30 94
1996-12-31 109
1997-03-31 110
1997-06-30 142
1997-09-30 142
1997-12-31 147
1998-03-31 133
1998-06-30 147
1998-09-30 61
1998-12-31 69
1999-03-31 142
1999-06-30 155
1999-09-30 168
1999-12-31 152
2000-03-31 193
2000-06-30 206
2000-09-30 221
2000-12-31 290
2001-03-31 306
2001-06-30 348
2001-09-30 320
2001-12-31 382
2002-03-31 338
2002-06-30 261
2002-09-30 228
2002-12-31 255
2003-03-31 198
2003-06-30 233
2003-09-30 208
2003-12-31 227
2004-03-31 185
2004-06-30 205
2004-09-30 157
2004-12-31 163
2005-03-31 260
2005-06-30 181
2005-09-30 219
2005-12-31 239
2006-03-31 257
2006-06-30 257
2006-09-30 375
2006-12-31 423
2007-03-31 416
2007-06-30 630
2007-09-30 637
2007-12-31 570
2008-03-31 411
2008-06-30 274
2008-09-30 427
2008-12-31 440
2009-03-31 449
2009-06-30 455
2009-09-30 447
2009-12-31 809
2010-03-31 578
2010-06-30 709
2010-09-30 640
2010-12-31 1018
2011-03-31 457
2011-06-30 435
2011-09-30 653
2011-12-31 378
2012-03-31 690
2012-06-30 502
2012-09-30 479
2012-12-31 744
2013-03-31 1688
2013-06-30 568
2013-09-30 475
2013-12-31 679
2014-03-31 748
2014-06-30 1340
2014-09-30 1191
2014-12-31 1313
2015-03-31 1367
2015-06-30 1377
2015-09-30 1331
2015-12-31 738
2016-03-31 1226
2016-06-30 1644
2016-09-30 994
2016-12-31 1084
2017-03-31 1403
2017-06-30 1158
2017-09-30 1718
2017-12-31 2239
2018-03-31 1003
2018-06-30 1745
2018-09-30 1883
2018-12-31 1637
2019-03-31 1341
2019-06-30 1093
2019-09-30 1525
2019-12-31 1444
2020-03-31 2187
2020-06-30 2106
2020-09-30 3296
2020-12-31 3054
2021-03-31 2848
2021-06-30 3263
2021-09-30 3658
2021-12-31 3281
2022-03-31 3762
2022-06-30 3072
2022-09-30 1207
2022-12-31 1169
2023-03-31 924
2023-06-30 1005
2023-09-30 747