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
1978-04-01 170
1978-07-01 153
1978-10-01 125
1979-01-01 165
1979-04-01 317
1979-07-01 413
1979-10-01 543
1980-01-01 503
1980-04-01 419
1980-07-01 335
1980-10-01 202
1981-01-01 215
1981-04-01 218
1981-07-01 432
1981-10-01 418
1982-01-01 390
1982-04-01 418
1982-07-01 319
1982-10-01 532
1983-01-01 631
1983-04-01 632
1983-07-01 589
1983-10-01 480
1984-01-01 438
1984-04-01 539
1984-07-01 641
1984-10-01 1519
1985-01-01 1615
1985-04-01 1456
1985-07-01 1464
1985-10-01 602
1986-01-01 628
1986-04-01 766
1986-07-01 938
1986-10-01 1235
1987-01-01 1353
1987-04-01 1428
1987-07-01 1282
1987-10-01 1153
1988-01-01 1091
1988-04-01 1147
1988-07-01 1076
1988-10-01 913
1989-01-01 748
1989-04-01 1054
1989-07-01 1296
1989-10-01 1598
1990-01-01 1659
1990-04-01 1125
1990-07-01 999
1990-10-01 795
1991-01-01 584
1991-04-01 504
1991-07-01 571
1991-10-01 766
1992-01-01 695
1992-04-01 1355
1992-07-01 1331
1992-10-01 970
1993-01-01 998
1993-04-01 626
1993-07-01 732
1993-10-01 898
1994-01-01 877
1994-04-01 750
1994-07-01 833
1994-10-01 851
1995-01-01 919
1995-04-01 598
1995-07-01 547
1995-10-01 776
1996-01-01 1095
1996-04-01 1383
1996-07-01 1015
1996-10-01 973
1997-01-01 766
1997-04-01 553
1997-07-01 583
1997-10-01 427
1998-01-01 433
1998-04-01 395
1998-07-01 331
1998-10-01 1271
1999-01-01 1442
1999-04-01 1984
1999-07-01 2113
1999-10-01 1120
2000-01-01 855
2000-04-01 787
2000-07-01 910
2000-10-01 857
2001-01-01 1345
2001-04-01 976
2001-07-01 1229
2001-10-01 1896
2002-01-01 1431
2002-04-01 1472
2002-07-01 956
2002-10-01 1519
2003-01-01 1857
2003-04-01 2437
2003-07-01 2773
2003-10-01 1712
2004-01-01 2153
2004-04-01 2254
2004-07-01 2499
2004-10-01 2646
2005-01-01 2310
2005-04-01 2801
2005-07-01 3621
2005-10-01 5847
2006-01-01 6876
2006-04-01 5221
2006-07-01 8749
2006-10-01 8867
2007-01-01 14152
2007-04-01 15809
2007-07-01 13692
2007-10-01 12330
2008-01-01 12501
2008-04-01 13233
2008-07-01 12918
2008-10-01 15509
2009-01-01 15360
2009-04-01 16389
2009-07-01 16542
2009-10-01 13572
2010-01-01 11503
2010-04-01 15206
2010-07-01 16467
2010-10-01 13345
2011-01-01 15825
2011-04-01 12192
2011-07-01 15713
2011-10-01 19419
2012-01-01 21038
2012-04-01 23740
2012-07-01 21642
2012-10-01 24068
2013-01-01 17953
2013-04-01 21843
2013-07-01 25205
2013-10-01 26239
2014-01-01 30388
2014-04-01 23036
2014-07-01 22850
2014-10-01 23769
2015-01-01 20497
2015-04-01 27743
2015-07-01 27767
2015-10-01 30067
2016-01-01 31701
2016-04-01 27626
2016-07-01 28249
2016-10-01 29631
2017-01-01 33866
2017-04-01 32417
2017-07-01 32596
2017-10-01 28505
2018-01-01 24550
2018-04-01 35275