Quarterly Millions of US Dollars
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 0
1978-07-01 0
1978-10-01 0
1979-01-01 0
1979-04-01 50
1979-07-01 165
1979-10-01 166
1980-01-01 153
1980-04-01 160
1980-07-01 45
1980-10-01 99
1981-01-01 563
1981-04-01 545
1981-07-01 701
1981-10-01 664
1982-01-01 223
1982-04-01 443
1982-07-01 421
1982-10-01 678
1983-01-01 632
1983-04-01 399
1983-07-01 381
1983-10-01 253
1984-01-01 253
1984-04-01 268
1984-07-01 165
1984-10-01 305
1985-01-01 483
1985-04-01 609
1985-07-01 923
1985-10-01 1002
1986-01-01 1080
1986-04-01 952
1986-07-01 807
1986-10-01 611
1987-01-01 624
1987-04-01 857
1987-07-01 712
1987-10-01 872
1988-01-01 760
1988-04-01 757
1988-07-01 796
1988-10-01 1362
1989-01-01 1316
1989-04-01 1172
1989-07-01 1585
1989-10-01 1701
1990-01-01 1597
1990-04-01 1913
1990-07-01 1562
1990-10-01 1103
1991-01-01 1138
1991-04-01 940
1991-07-01 1921
1991-10-01 1976
1992-01-01 2005
1992-04-01 2169
1992-07-01 1605
1992-10-01 1656
1993-01-01 1904
1993-04-01 1577
1993-07-01 5547
1993-10-01 4804
1994-01-01 5065
1994-04-01 3902
1994-07-01 3136
1994-10-01 4303
1995-01-01 4650
1995-04-01 4061
1995-07-01 4582
1995-10-01 3597
1996-01-01 2359
1996-04-01 2289
1996-07-01 3289
1996-10-01 5031
1997-01-01 5653
1997-04-01 6047
1997-07-01 4983
1997-10-01 3137
1998-01-01 2168
1998-04-01 2110
1998-07-01 3026
1998-10-01 4812
1999-01-01 4851
1999-04-01 4292
1999-07-01 3594
1999-10-01 2689
2000-01-01 2737
2000-04-01 1567
2000-07-01 2349
2000-10-01 3542
2001-01-01 3373
2001-04-01 2692
2001-07-01 3375
2001-10-01 2190
2002-01-01 2644
2002-04-01 1789
2002-07-01 1557
2002-10-01 2393
2003-01-01 1786
2003-04-01 1323
2003-07-01 1621
2003-10-01 1305
2004-01-01 1158
2004-04-01 747
2004-07-01 1534
2004-10-01 1617
2005-01-01 1764
2005-04-01 2719
2005-07-01 2716
2005-10-01 2919
2006-01-01 2094
2006-04-01 1594
2006-07-01 1259
2006-10-01 1063
2007-01-01 2623
2007-04-01 2699
2007-07-01 4721
2007-10-01 5056
2008-01-01 1961
2008-04-01 1970
2008-07-01 1556
2008-10-01 3373
2009-01-01 2728
2009-04-01 3989
2009-07-01 6405
2009-10-01 5873
2010-01-01 5449
2010-04-01 5685
2010-07-01 5542
2010-10-01 4468
2011-01-01 5267
2011-04-01 8306
2011-07-01 8803
2011-10-01 8608
2012-01-01 7349
2012-04-01 4698
2012-07-01 3807
2012-10-01 7103
2013-01-01 6116
2013-04-01 3523
2013-07-01 5580
2013-10-01 6554
2014-01-01 4532
2014-04-01 2494
2014-07-01 891
2014-10-01 1030
2015-01-01 2048
2015-04-01 459
2015-07-01 311
2015-10-01 1289
2016-01-01 1739
2016-04-01 2921
2016-07-01 1295
2016-10-01 2193
2017-01-01 1427
2017-04-01 1210
2017-07-01 790
2017-10-01 1079
2018-01-01 457
2018-04-01 1705