Quarterly Millions of US Dollars
1971-10-01 0
1972-01-01 0
1972-04-01 0
1972-07-01 0
1972-10-01 0
1973-01-01 0
1973-04-01 0
1973-07-01 0
1973-10-01 0
1974-01-01 0
1974-04-01 0
1974-07-01 0
1974-10-01 0
1975-01-01 0
1975-04-01 0
1975-07-01 0
1975-10-01 0
1976-01-01 0
1976-04-01 0
1976-07-01 0
1976-10-01 0
1977-01-01 0
1977-04-01 0
1977-07-01 0
1977-10-01 0
1978-01-01 0
1978-04-01 0
1978-07-01 0
1978-10-01 19
1979-01-01 110
1979-04-01 111
1979-07-01 114
1979-10-01 110
1980-01-01 64
1980-04-01 127
1980-07-01 211
1980-10-01 188
1981-01-01 150
1981-04-01 356
1981-07-01 452
1981-10-01 561
1982-01-01 728
1982-04-01 528
1982-07-01 433
1982-10-01 538
1983-01-01 382
1983-04-01 357
1983-07-01 446
1983-10-01 302
1984-01-01 345
1984-04-01 296
1984-07-01 261
1984-10-01 557
1985-01-01 498
1985-04-01 635
1985-07-01 650
1985-10-01 651
1986-01-01 912
1986-04-01 910
1986-07-01 842
1986-10-01 757
1987-01-01 746
1987-04-01 899
1987-07-01 1431
1987-10-01 1577
1988-01-01 1490
1988-04-01 1262
1988-07-01 773
1988-10-01 514
1989-01-01 513
1989-04-01 489
1989-07-01 463
1989-10-01 544
1990-01-01 1334
1990-04-01 1245
1990-07-01 1195
1990-10-01 1177
1991-01-01 264
1991-04-01 634
1991-07-01 761
1991-10-01 779
1992-01-01 1170
1992-04-01 754
1992-07-01 1134
1992-10-01 1140
1993-01-01 680
1993-04-01 768
1993-07-01 3368
1993-10-01 3785
1994-01-01 5718
1994-04-01 6392
1994-07-01 7329
1994-10-01 5833
1995-01-01 3280
1995-04-01 5451
1995-07-01 7762
1995-10-01 8071
1996-01-01 7956
1996-04-01 5532
1996-07-01 9977
1996-10-01 10598
1997-01-01 10948
1997-04-01 12075
1997-07-01 6350
1997-10-01 5983
1998-01-01 5964
1998-04-01 4398
1998-07-01 3158
1998-10-01 3550
1999-01-01 3574
1999-04-01 5151
1999-07-01 5801
1999-10-01 7199
2000-01-01 6425
2000-04-01 11068
2000-07-01 10106
2000-10-01 14561
2001-01-01 14713
2001-04-01 13858
2001-07-01 15264
2001-10-01 8754
2002-01-01 18023
2002-04-01 20481
2002-07-01 21944
2002-10-01 23324
2003-01-01 14809
2003-04-01 12423
2003-07-01 10222
2003-10-01 11056
2004-01-01 9910
2004-04-01 7473
2004-07-01 5697
2004-10-01 4049
2005-01-01 5708
2005-04-01 5019
2005-07-01 6763
2005-10-01 7288
2006-01-01 7150
2006-04-01 6565
2006-07-01 5605
2006-10-01 5218
2007-01-01 5019
2007-04-01 5539
2007-07-01 5719
2007-10-01 8692
2008-01-01 11318
2008-04-01 10501
2008-07-01 10047
2008-10-01 7172
2009-01-01 7749
2009-04-01 7110
2009-07-01 6648
2009-10-01 7116
2010-01-01 5596
2010-04-01 5018
2010-07-01 5013
2010-10-01 2069
2011-01-01 2121
2011-04-01 4595
2011-07-01 4111
2011-10-01 4794
2012-01-01 3861
2012-04-01 4223
2012-07-01 8265
2012-10-01 9515
2013-01-01 12260
2013-04-01 13197
2013-07-01 11041
2013-10-01 10600
2014-01-01 13566
2014-04-01 13813
2014-07-01 13507
2014-10-01 12047
2015-01-01 6715
2015-04-01 4545
2015-07-01 12211
2015-10-01 15426
2016-01-01 16324
2016-04-01 22000
2016-07-01 14590
2016-10-01 16537
2017-01-01 15567
2017-04-01 12850
2017-07-01 14868
2017-10-01 9276
2018-01-01 8915
2018-04-01 12221