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 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 50
1981-10-01 50
1982-01-01 50
1982-04-01 100
1982-07-01 50
1982-10-01 160
1983-01-01 210
1983-04-01 168
1983-07-01 168
1983-10-01 73
1984-01-01 23
1984-04-01 150
1984-07-01 238
1984-10-01 518
1985-01-01 612
1985-04-01 540
1985-07-01 482
1985-10-01 260
1986-01-01 279
1986-04-01 343
1986-07-01 418
1986-10-01 432
1987-01-01 379
1987-04-01 308
1987-07-01 239
1987-10-01 232
1988-01-01 288
1988-04-01 327
1988-07-01 290
1988-10-01 280
1989-01-01 227
1989-04-01 211
1989-07-01 273
1989-10-01 206
1990-01-01 141
1990-04-01 62
1990-07-01 0
1990-10-01 0
1991-01-01 0
1991-04-01 0
1991-07-01 0
1991-10-01 0
1992-01-01 0
1992-04-01 0
1992-07-01 0
1992-10-01 0
1993-01-01 0
1993-04-01 300
1993-07-01 300
1993-10-01 300
1994-01-01 300
1994-04-01 0
1994-07-01 0
1994-10-01 89
1995-01-01 89
1995-04-01 89
1995-07-01 194
1995-10-01 105
1996-01-01 105
1996-04-01 105
1996-07-01 0
1996-10-01 0
1997-01-01 0
1997-04-01 85
1997-07-01 100
1997-10-01 100
1998-01-01 100
1998-04-01 15
1998-07-01 0
1998-10-01 0
1999-01-01 0
1999-04-01 0
1999-07-01 0
1999-10-01 0
2000-01-01 0
2000-04-01 0
2000-07-01 0
2000-10-01 200
2001-01-01 200
2001-04-01 200
2001-07-01 300
2001-10-01 100
2002-01-01 100
2002-04-01 100
2002-07-01 0
2002-10-01 0
2003-01-01 0
2003-04-01 75
2003-07-01 160
2003-10-01 160
2004-01-01 510
2004-04-01 560
2004-07-01 755
2004-10-01 955
2005-01-01 605
2005-04-01 1188
2005-07-01 906
2005-10-01 1055
2006-01-01 1192
2006-04-01 483
2006-07-01 1032
2006-10-01 1413
2007-01-01 1294
2007-04-01 1301
2007-07-01 734
2007-10-01 9
2008-01-01 1144
2008-04-01 1137
2008-07-01 1079
2008-10-01 1663
2009-01-01 1103
2009-04-01 1100
2009-07-01 1275
2009-10-01 675
2010-01-01 320
2010-04-01 920
2010-07-01 745
2010-10-01 745
2011-01-01 724
2011-04-01 324
2011-07-01 724
2011-10-01 724
2012-01-01 1680
2012-04-01 2430
2012-07-01 2030
2012-10-01 5630
2013-01-01 2550
2013-04-01 1600
2013-07-01 1600
2013-10-01 500
2014-01-01 0
2014-04-01 0
2014-07-01 0
2014-10-01 911
2015-01-01 883
2015-04-01 919
2015-07-01 917
2015-10-01 2125
2016-01-01 2551
2016-04-01 2549
2016-07-01 2577
2016-10-01 526
2017-01-01 276
2017-04-01 1126
2017-07-01 1225
2017-10-01 1625
2018-01-01 3881
2018-04-01 2431