Quarterly Millions of US Dollars
1968-07-01 0
1968-10-01 0
1969-01-01 0
1969-04-01 0
1969-07-01 0
1969-10-01 0
1970-01-01 0
1970-04-01 0
1970-07-01 0
1970-10-01 0
1971-01-01 0
1971-04-01 0
1971-07-01 0
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 36
1978-07-01 287
1978-10-01 470
1979-01-01 521
1979-04-01 564
1979-07-01 375
1979-10-01 206
1980-01-01 176
1980-04-01 271
1980-07-01 369
1980-10-01 408
1981-01-01 405
1981-04-01 305
1981-07-01 200
1981-10-01 141
1982-01-01 82
1982-04-01 160
1982-07-01 162
1982-10-01 183
1983-01-01 468
1983-04-01 332
1983-07-01 367
1983-10-01 388
1984-01-01 163
1984-04-01 254
1984-07-01 277
1984-10-01 446
1985-01-01 589
1985-04-01 511
1985-07-01 616
1985-10-01 510
1986-01-01 337
1986-04-01 394
1986-07-01 580
1986-10-01 875
1987-01-01 1228
1987-04-01 1298
1987-07-01 1092
1987-10-01 765
1988-01-01 592
1988-04-01 479
1988-07-01 373
1988-10-01 339
1989-01-01 265
1989-04-01 311
1989-07-01 732
1989-10-01 891
1990-01-01 1128
1990-04-01 1213
1990-07-01 910
1990-10-01 1466
1991-01-01 1682
1991-04-01 1963
1991-07-01 2008
1991-10-01 1643
1992-01-01 1352
1992-04-01 1264
1992-07-01 2177
1992-10-01 1860
1993-01-01 2064
1993-04-01 1759
1993-07-01 2835
1993-10-01 3060
1994-01-01 2803
1994-04-01 3479
1994-07-01 3529
1994-10-01 3019
1995-01-01 3286
1995-04-01 3763
1995-07-01 3671
1995-10-01 3205
1996-01-01 3120
1996-04-01 2439
1996-07-01 2162
1996-10-01 2913
1997-01-01 2430
1997-04-01 2436
1997-07-01 2489
1997-10-01 2341
1998-01-01 1958
1998-04-01 2565
1998-07-01 2408
1998-10-01 3342
1999-01-01 3171
1999-04-01 4308
1999-07-01 6939
1999-10-01 8547
2000-01-01 9240
2000-04-01 10742
2000-07-01 11395
2000-10-01 17660
2001-01-01 18829
2001-04-01 13887
2001-07-01 14648
2001-10-01 15544
2002-01-01 14520
2002-04-01 13700
2002-07-01 16114
2002-10-01 16019
2003-01-01 15023
2003-04-01 18751
2003-07-01 17871
2003-10-01 23647
2004-01-01 21866
2004-04-01 20659
2004-07-01 18246
2004-10-01 20127
2005-01-01 18406
2005-04-01 19669
2005-07-01 16470
2005-10-01 16915
2006-01-01 15860
2006-04-01 15626
2006-07-01 14484
2006-10-01 18012
2007-01-01 16327
2007-04-01 20649
2007-07-01 14149
2007-10-01 15921
2008-01-01 17082
2008-04-01 13526
2008-07-01 13989
2008-10-01 13143
2009-01-01 13273
2009-04-01 11532
2009-07-01 12366
2009-10-01 10845
2010-01-01 12574
2010-04-01 12301
2010-07-01 10895
2010-10-01 13140
2011-01-01 10215
2011-04-01 9404
2011-07-01 7208
2011-10-01 10753
2012-01-01 16049
2012-04-01 17335
2012-07-01 21206
2012-10-01 22894
2013-01-01 24914
2013-04-01 25871
2013-07-01 20858
2013-10-01 17653
2014-01-01 20241
2014-04-01 22825
2014-07-01 19628
2014-10-01 18639
2015-01-01 16546
2015-04-01 14775
2015-07-01 14018
2015-10-01 15142
2016-01-01 21688
2016-04-01 22489
2016-07-01 23081
2016-10-01 18818
2017-01-01 21398
2017-04-01 22357
2017-07-01 25085
2017-10-01 26171
2018-01-01 28451
2018-04-01 26590