Quarterly Millions of US Dollars
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 30
1977-10-01 98
1978-01-01 127
1978-04-01 154
1978-07-01 134
1978-10-01 82
1979-01-01 122
1979-04-01 259
1979-07-01 343
1979-10-01 474
1980-01-01 399
1980-04-01 264
1980-07-01 193
1980-10-01 57
1981-01-01 38
1981-04-01 33
1981-07-01 167
1981-10-01 157
1982-01-01 159
1982-04-01 162
1982-07-01 117
1982-10-01 187
1983-01-01 230
1983-04-01 270
1983-07-01 205
1983-10-01 217
1984-01-01 213
1984-04-01 176
1984-07-01 176
1984-10-01 503
1985-01-01 547
1985-04-01 543
1985-07-01 599
1985-10-01 249
1986-01-01 251
1986-04-01 249
1986-07-01 268
1986-10-01 297
1987-01-01 319
1987-04-01 458
1987-07-01 477
1987-10-01 411
1988-01-01 356
1988-04-01 325
1988-07-01 262
1988-10-01 258
1989-01-01 211
1989-04-01 503
1989-07-01 680
1989-10-01 800
1990-01-01 887
1990-04-01 459
1990-07-01 436
1990-10-01 332
1991-01-01 228
1991-04-01 294
1991-07-01 202
1991-10-01 335
1992-01-01 281
1992-04-01 410
1992-07-01 369
1992-10-01 217
1993-01-01 217
1993-04-01 0
1993-07-01 3
1993-10-01 3
1994-01-01 3
1994-04-01 3
1994-07-01 26
1994-10-01 26
1995-01-01 32
1995-04-01 32
1995-07-01 108
1995-10-01 108
1996-01-01 108
1996-04-01 383
1996-07-01 277
1996-10-01 273
1997-01-01 252
1997-04-01 2
1997-07-01 17
1997-10-01 17
1998-01-01 17
1998-04-01 17
1998-07-01 2
1998-10-01 376
1999-01-01 403
1999-04-01 391
1999-07-01 452
1999-10-01 290
2000-01-01 251
2000-04-01 579
2000-07-01 522
2000-10-01 319
2001-01-01 352
2001-04-01 92
2001-07-01 376
2001-10-01 648
2002-01-01 610
2002-04-01 622
2002-07-01 334
2002-10-01 36
2003-01-01 108
2003-04-01 183
2003-07-01 304
2003-10-01 304
2004-01-01 583
2004-04-01 1240
2004-07-01 1489
2004-10-01 1822
2005-01-01 1426
2005-04-01 635
2005-07-01 314
2005-10-01 423
2006-01-01 583
2006-04-01 587
2006-07-01 984
2006-10-01 888
2007-01-01 762
2007-04-01 1029
2007-07-01 1218
2007-10-01 1030
2008-01-01 1752
2008-04-01 1668
2008-07-01 1717
2008-10-01 2313
2009-01-01 1762
2009-04-01 1608
2009-07-01 990
2009-10-01 576
2010-01-01 1195
2010-04-01 3396
2010-07-01 3487
2010-10-01 3281
2011-01-01 2750
2011-04-01 1927
2011-07-01 2707
2011-10-01 5874
2012-01-01 9510
2012-04-01 9865
2012-07-01 11415
2012-10-01 13383
2013-01-01 6952
2013-04-01 8751
2013-07-01 10146
2013-10-01 7507
2014-01-01 7453
2014-04-01 4427
2014-07-01 1576
2014-10-01 1578
2015-01-01 3097
2015-04-01 4536
2015-07-01 4666
2015-10-01 7679
2016-01-01 8312
2016-04-01 6697
2016-07-01 6001
2016-10-01 4367
2017-01-01 6536
2017-04-01 7510
2017-07-01 8455
2017-10-01 7206
2018-01-01 4862
2018-04-01 5715