Quarterly Millions of US Dollars
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 50
1981-07-01 50
1981-10-01 50
1982-01-01 50
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 30
1984-07-01 30
1984-10-01 30
1985-01-01 30
1985-04-01 0
1985-07-01 0
1985-10-01 0
1986-01-01 0
1986-04-01 0
1986-07-01 0
1986-10-01 31
1987-01-01 33
1987-04-01 33
1987-07-01 33
1987-10-01 30
1988-01-01 30
1988-04-01 30
1988-07-01 30
1988-10-01 100
1989-01-01 100
1989-04-01 100
1989-07-01 103
1989-10-01 763
1990-01-01 1464
1990-04-01 1569
1990-07-01 1645
1990-10-01 900
1991-01-01 146
1991-04-01 122
1991-07-01 297
1991-10-01 358
1992-01-01 417
1992-04-01 713
1992-07-01 704
1992-10-01 579
1993-01-01 620
1993-04-01 409
1993-07-01 313
1993-10-01 384
1994-01-01 363
1994-04-01 354
1994-07-01 510
1994-10-01 462
1995-01-01 557
1995-04-01 461
1995-07-01 635
1995-10-01 1649
1996-01-01 980
1996-04-01 946
1996-07-01 435
1996-10-01 220
1997-01-01 1207
1997-04-01 1343
1997-07-01 1549
1997-10-01 1393
1998-01-01 2013
1998-04-01 2611
1998-07-01 4288
1998-10-01 4489
1999-01-01 3189
1999-04-01 2718
1999-07-01 1552
1999-10-01 2510
2000-01-01 3582
2000-04-01 2399
2000-07-01 2001
2000-10-01 2556
2001-01-01 1803
2001-04-01 1880
2001-07-01 2965
2001-10-01 4172
2002-01-01 2933
2002-04-01 2480
2002-07-01 3402
2002-10-01 4908
2003-01-01 6859
2003-04-01 7474
2003-07-01 9241
2003-10-01 6808
2004-01-01 4544
2004-04-01 7441
2004-07-01 5972
2004-10-01 5610
2005-01-01 4292
2005-04-01 1074
2005-07-01 4014
2005-10-01 4721
2006-01-01 6419
2006-04-01 10136
2006-07-01 9778
2006-10-01 11430
2007-01-01 9834
2007-04-01 8739
2007-07-01 7336
2007-10-01 7362
2008-01-01 7082
2008-04-01 9368
2008-07-01 6857
2008-10-01 9823
2009-01-01 8208
2009-04-01 15562
2009-07-01 21269
2009-10-01 22819
2010-01-01 24709
2010-04-01 21686
2010-07-01 22815
2010-10-01 20420
2011-01-01 23900
2011-04-01 18123
2011-07-01 21044
2011-10-01 20860
2012-01-01 15837
2012-04-01 17054
2012-07-01 11696
2012-10-01 16657
2013-01-01 16154
2013-04-01 19494
2013-07-01 21869
2013-10-01 30199
2014-01-01 28261
2014-04-01 16363
2014-07-01 15014
2014-10-01 7678
2015-01-01 4400
2015-04-01 6159
2015-07-01 4299
2015-10-01 9961
2016-01-01 11346
2016-04-01 10548
2016-07-01 10352
2016-10-01 5932
2017-01-01 6372
2017-04-01 10349
2017-07-01 10309
2017-10-01 7295
2018-01-01 7549
2018-04-01 9335