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 23
1976-01-01 24
1976-04-01 24
1976-07-01 25
1976-10-01 0
1977-01-01 0
1977-04-01 4
1977-07-01 11
1977-10-01 12
1978-01-01 41
1978-04-01 44
1978-07-01 39
1978-10-01 40
1979-01-01 144
1979-04-01 288
1979-07-01 343
1979-10-01 403
1980-01-01 420
1980-04-01 652
1980-07-01 659
1980-10-01 884
1981-01-01 757
1981-04-01 455
1981-07-01 557
1981-10-01 538
1982-01-01 664
1982-04-01 934
1982-07-01 946
1982-10-01 765
1983-01-01 725
1983-04-01 494
1983-07-01 357
1983-10-01 461
1984-01-01 395
1984-04-01 737
1984-07-01 1235
1984-10-01 2425
1985-01-01 2871
1985-04-01 2613
1985-07-01 2821
1985-10-01 1819
1986-01-01 1985
1986-04-01 2211
1986-07-01 2305
1986-10-01 2460
1987-01-01 2197
1987-04-01 1749
1987-07-01 2029
1987-10-01 2391
1988-01-01 2232
1988-04-01 2135
1988-07-01 1404
1988-10-01 1249
1989-01-01 1383
1989-04-01 1727
1989-07-01 1920
1989-10-01 2753
1990-01-01 2563
1990-04-01 2988
1990-07-01 2925
1990-10-01 2404
1991-01-01 2037
1991-04-01 2080
1991-07-01 2901
1991-10-01 3252
1992-01-01 3905
1992-04-01 4873
1992-07-01 5154
1992-10-01 4822
1993-01-01 4993
1993-04-01 3822
1993-07-01 6811
1993-10-01 5664
1994-01-01 4995
1994-04-01 4528
1994-07-01 4289
1994-10-01 5356
1995-01-01 5005
1995-04-01 6018
1995-07-01 5139
1995-10-01 4873
1996-01-01 5460
1996-04-01 5652
1996-07-01 3879
1996-10-01 5164
1997-01-01 5545
1997-04-01 5549
1997-07-01 6538
1997-10-01 5949
1998-01-01 7144
1998-04-01 6947
1998-07-01 7852
1998-10-01 9852
1999-01-01 9860
1999-04-01 11219
1999-07-01 12139
1999-10-01 9490
2000-01-01 9632
2000-04-01 9565
2000-07-01 9641
2000-10-01 14470
2001-01-01 25310
2001-04-01 23738
2001-07-01 26104
2001-10-01 22118
2002-01-01 17109
2002-04-01 21140
2002-07-01 27216
2002-10-01 30813
2003-01-01 36448
2003-04-01 37764
2003-07-01 34877
2003-10-01 35697
2004-01-01 27914
2004-04-01 30153
2004-07-01 29507
2004-10-01 32913
2005-01-01 23999
2005-04-01 21599
2005-07-01 24574
2005-10-01 24848
2006-01-01 26658
2006-04-01 29235
2006-07-01 26407
2006-10-01 27716
2007-01-01 31196
2007-04-01 31574
2007-07-01 31615
2007-10-01 34727
2008-01-01 43821
2008-04-01 40480
2008-07-01 36670
2008-10-01 32388
2009-01-01 22484
2009-04-01 31689
2009-07-01 33382
2009-10-01 36964
2010-01-01 38265
2010-04-01 37483
2010-07-01 39970
2010-10-01 34393
2011-01-01 42943
2011-04-01 40428
2011-07-01 34061
2011-10-01 34019
2012-01-01 34510
2012-04-01 43374
2012-07-01 49646
2012-10-01 52449
2013-01-01 55017
2013-04-01 51117
2013-07-01 59991
2013-10-01 68888
2014-01-01 68152
2014-04-01 70643
2014-07-01 58958
2014-10-01 47421
2015-01-01 41881
2015-04-01 40533
2015-07-01 43675
2015-10-01 46093
2016-01-01 53277
2016-04-01 51394
2016-07-01 49258
2016-10-01 50593
2017-01-01 41916
2017-04-01 40040
2017-07-01 45369
2017-10-01 48526
2018-01-01 56129
2018-04-01 53421