Quarterly Millions of US Dollars
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 25
1979-07-01 26
1979-10-01 26
1980-01-01 24
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 31
1983-07-01 30
1983-10-01 29
1984-01-01 31
1984-04-01 0
1984-07-01 33
1984-10-01 87
1985-01-01 88
1985-04-01 89
1985-07-01 60
1985-10-01 0
1986-01-01 0
1986-04-01 0
1986-07-01 0
1986-10-01 32
1987-01-01 34
1987-04-01 384
1987-07-01 388
1987-10-01 420
1988-01-01 514
1988-04-01 327
1988-07-01 433
1988-10-01 498
1989-01-01 378
1989-04-01 152
1989-07-01 49
1989-10-01 138
1990-01-01 130
1990-04-01 132
1990-07-01 145
1990-10-01 0
1991-01-01 107
1991-04-01 156
1991-07-01 164
1991-10-01 1265
1992-01-01 1080
1992-04-01 1086
1992-07-01 2351
1992-10-01 1418
1993-01-01 1418
1993-04-01 2059
1993-07-01 1250
1993-10-01 1606
1994-01-01 1635
1994-04-01 1437
1994-07-01 1034
1994-10-01 430
1995-01-01 489
1995-04-01 0
1995-07-01 0
1995-10-01 200
1996-01-01 200
1996-04-01 300
1996-07-01 395
1996-10-01 182
1997-01-01 654
1997-04-01 607
1997-07-01 564
1997-10-01 530
1998-01-01 66
1998-04-01 66
1998-07-01 0
1998-10-01 0
1999-01-01 0
1999-04-01 0
1999-07-01 200
1999-10-01 200
2000-01-01 200
2000-04-01 200
2000-07-01 0
2000-10-01 0
2001-01-01 0
2001-04-01 0
2001-07-01 0
2001-10-01 0
2002-01-01 0
2002-04-01 0
2002-07-01 0
2002-10-01 650
2003-01-01 650
2003-04-01 650
2003-07-01 650
2003-10-01 0
2004-01-01 0
2004-04-01 0
2004-07-01 0
2004-10-01 885
2005-01-01 843
2005-04-01 786
2005-07-01 783
2005-10-01 0
2006-01-01 0
2006-04-01 0
2006-07-01 0
2006-10-01 0
2007-01-01 0
2007-04-01 0
2007-07-01 0
2007-10-01 0
2008-01-01 0
2008-04-01 1500
2008-07-01 1632
2008-10-01 1607
2009-01-01 1604
2009-04-01 121
2009-07-01 0
2009-10-01 0
2010-01-01 0
2010-04-01 0
2010-07-01 1750
2010-10-01 1750
2011-01-01 1750
2011-04-01 1750
2011-07-01 0
2011-10-01 0
2012-01-01 0
2012-04-01 0
2012-07-01 0
2012-10-01 0
2013-01-01 0
2013-04-01 0
2013-07-01 0
2013-10-01 0
2014-01-01 0
2014-04-01 1250
2014-07-01 1250
2014-10-01 1250
2015-01-01 1250
2015-04-01 0
2015-07-01 1200
2015-10-01 1200
2016-01-01 1200
2016-04-01 1200
2016-07-01 0
2016-10-01 0
2017-01-01 0
2017-04-01 0
2017-07-01 0
2017-10-01 449
2018-01-01 458
2018-04-01 440