Quarterly Millions of US Dollars
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 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 0
1979-07-01 0
1979-10-01 0
1980-01-01 0
1980-04-01 0
1980-07-01 0
1980-10-01 0
1981-01-01 0
1981-04-01 0
1981-07-01 0
1981-10-01 0
1982-01-01 0
1982-04-01 0
1982-07-01 0
1982-10-01 0
1983-01-01 0
1983-04-01 0
1983-07-01 0
1983-10-01 0
1984-01-01 0
1984-04-01 0
1984-07-01 0
1984-10-01 7
1985-01-01 507
1985-04-01 507
1985-07-01 507
1985-10-01 500
1986-01-01 1
1986-04-01 1
1986-07-01 1
1986-10-01 1
1987-01-01 0
1987-04-01 0
1987-07-01 0
1987-10-01 1000
1988-01-01 2126
1988-04-01 2741
1988-07-01 2705
1988-10-01 3795
1989-01-01 2553
1989-04-01 1785
1989-07-01 1851
1989-10-01 1719
1990-01-01 1924
1990-04-01 2138
1990-07-01 2207
1990-10-01 522
1991-01-01 1382
1991-04-01 1187
1991-07-01 1230
1991-10-01 1441
1992-01-01 272
1992-04-01 284
1992-07-01 1297
1992-10-01 1046
1993-01-01 1046
1993-04-01 1046
1993-07-01 47
1993-10-01 1547
1994-01-01 1545
1994-04-01 1546
1994-07-01 1557
1994-10-01 1057
1995-01-01 1205
1995-04-01 3712
1995-07-01 3701
1995-10-01 2709
1996-01-01 2553
1996-04-01 1555
1996-07-01 3112
1996-10-01 4184
1997-01-01 7013
1997-04-01 5955
1997-07-01 7201
1997-10-01 6190
1998-01-01 8949
1998-04-01 8492
1998-07-01 9808
1998-10-01 10044
1999-01-01 4203
1999-04-01 5616
1999-07-01 3637
1999-10-01 3619
2000-01-01 7715
2000-04-01 14360
2000-07-01 12103
2000-10-01 11244
2001-01-01 7698
2001-04-01 10790
2001-07-01 8673
2001-10-01 8055
2002-01-01 7841
2002-04-01 5345
2002-07-01 8655
2002-10-01 10486
2003-01-01 14661
2003-04-01 14702
2003-07-01 10361
2003-10-01 6493
2004-01-01 10717
2004-04-01 13937
2004-07-01 11979
2004-10-01 12069
2005-01-01 14434
2005-04-01 11232
2005-07-01 11997
2005-10-01 20851
2006-01-01 17069
2006-04-01 15800
2006-07-01 20690
2006-10-01 10709
2007-01-01 12016
2007-04-01 19947
2007-07-01 36082
2007-10-01 33935
2008-01-01 38208
2008-04-01 31841
2008-07-01 6940
2008-10-01 4814
2009-01-01 7556
2009-04-01 7137
2009-07-01 5362
2009-10-01 3912
2010-01-01 8084
2010-04-01 8155
2010-07-01 15062
2010-10-01 9103
2011-01-01 7223
2011-04-01 8806
2011-07-01 8595
2011-10-01 7560
2012-01-01 9109
2012-04-01 7614
2012-07-01 9346
2012-10-01 5920
2013-01-01 5068
2013-04-01 3811
2013-07-01 8574
2013-10-01 9366
2014-01-01 18593
2014-04-01 19984
2014-07-01 12361
2014-10-01 17252
2015-01-01 9616
2015-04-01 8475
2015-07-01 14948
2015-10-01 10435
2016-01-01 9721
2016-04-01 11546
2016-07-01 5419
2016-10-01 9167
2017-01-01 10511
2017-04-01 9414
2017-07-01 9713
2017-10-01 5242
2018-01-01 2895
2018-04-01 3760