Quarterly Millions of US Dollars
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 48
1978-10-01 105
1979-01-01 218
1979-04-01 229
1979-07-01 200
1979-10-01 169
1980-01-01 41
1980-04-01 37
1980-07-01 67
1980-10-01 62
1981-01-01 179
1981-04-01 253
1981-07-01 277
1981-10-01 270
1982-01-01 214
1982-04-01 123
1982-07-01 71
1982-10-01 76
1983-01-01 48
1983-04-01 137
1983-07-01 201
1983-10-01 330
1984-01-01 447
1984-04-01 333
1984-07-01 251
1984-10-01 386
1985-01-01 299
1985-04-01 330
1985-07-01 550
1985-10-01 436
1986-01-01 568
1986-04-01 652
1986-07-01 550
1986-10-01 366
1987-01-01 386
1987-04-01 376
1987-07-01 464
1987-10-01 665
1988-01-01 662
1988-04-01 746
1988-07-01 668
1988-10-01 682
1989-01-01 649
1989-04-01 439
1989-07-01 453
1989-10-01 638
1990-01-01 419
1990-04-01 395
1990-07-01 516
1990-10-01 249
1991-01-01 565
1991-04-01 618
1991-07-01 752
1991-10-01 1011
1992-01-01 1264
1992-04-01 1697
1992-07-01 2085
1992-10-01 1927
1993-01-01 2283
1993-04-01 1972
1993-07-01 1628
1993-10-01 1401
1994-01-01 586
1994-04-01 1476
1994-07-01 1813
1994-10-01 1823
1995-01-01 2204
1995-04-01 1918
1995-07-01 1706
1995-10-01 2069
1996-01-01 3026
1996-04-01 2165
1996-07-01 2056
1996-10-01 2434
1997-01-01 2897
1997-04-01 3101
1997-07-01 2817
1997-10-01 2189
1998-01-01 1088
1998-04-01 1904
1998-07-01 5281
1998-10-01 7426
1999-01-01 7314
1999-04-01 7154
1999-07-01 4793
1999-10-01 3772
2000-01-01 7275
2000-04-01 6797
2000-07-01 6327
2000-10-01 3688
2001-01-01 5869
2001-04-01 5092
2001-07-01 4247
2001-10-01 3441
2002-01-01 5313
2002-04-01 5841
2002-07-01 4374
2002-10-01 3420
2003-01-01 5587
2003-04-01 5550
2003-07-01 4460
2003-10-01 5017
2004-01-01 6656
2004-04-01 7459
2004-07-01 8346
2004-10-01 8133
2005-01-01 15262
2005-04-01 16079
2005-07-01 13502
2005-10-01 9448
2006-01-01 10100
2006-04-01 11369
2006-07-01 8645
2006-10-01 6468
2007-01-01 13776
2007-04-01 22180
2007-07-01 25527
2007-10-01 3298
2008-01-01 9562
2008-04-01 8429
2008-07-01 7974
2008-10-01 15674
2009-01-01 20966
2009-04-01 18000
2009-07-01 12301
2009-10-01 10693
2010-01-01 14703
2010-04-01 14497
2010-07-01 13209
2010-10-01 11524
2011-01-01 18448
2011-04-01 13271
2011-07-01 17579
2011-10-01 15232
2012-01-01 11818
2012-04-01 15590
2012-07-01 10750
2012-10-01 15565
2013-01-01 19038
2013-04-01 11640
2013-07-01 21757
2013-10-01 19712
2014-01-01 17732
2014-04-01 15457
2014-07-01 16149
2014-10-01 13387
2015-01-01 12758
2015-04-01 14765
2015-07-01 15356
2015-10-01 13780
2016-01-01 18178
2016-04-01 15103
2016-07-01 16054
2016-10-01 16342
2017-01-01 19190
2017-04-01 17753
2017-07-01 11905
2017-10-01 14154
2018-01-01 16640
2018-04-01 17901