Quarterly Millions of US Dollars
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 21
1982-04-01 20
1982-07-01 20
1982-10-01 21
1983-01-01 30
1983-04-01 110
1983-07-01 130
1983-10-01 130
1984-01-01 100
1984-04-01 20
1984-07-01 0
1984-10-01 4
1985-01-01 4
1985-04-01 44
1985-07-01 92
1985-10-01 95
1986-01-01 106
1986-04-01 55
1986-07-01 0
1986-10-01 0
1987-01-01 0
1987-04-01 68
1987-07-01 68
1987-10-01 82
1988-01-01 81
1988-04-01 75
1988-07-01 74
1988-10-01 80
1989-01-01 220
1989-04-01 445
1989-07-01 517
1989-10-01 515
1990-01-01 435
1990-04-01 141
1990-07-01 251
1990-10-01 328
1991-01-01 238
1991-04-01 241
1991-07-01 75
1991-10-01 0
1992-01-01 30
1992-04-01 32
1992-07-01 175
1992-10-01 156
1993-01-01 211
1993-04-01 277
1993-07-01 242
1993-10-01 254
1994-01-01 335
1994-04-01 272
1994-07-01 437
1994-10-01 453
1995-01-01 498
1995-04-01 496
1995-07-01 514
1995-10-01 514
1996-01-01 1011
1996-04-01 1006
1996-07-01 1042
1996-10-01 926
1997-01-01 815
1997-04-01 831
1997-07-01 710
1997-10-01 811
1998-01-01 864
1998-04-01 1083
1998-07-01 1553
1998-10-01 1370
1999-01-01 1195
1999-04-01 1149
1999-07-01 825
1999-10-01 1052
2000-01-01 1466
2000-04-01 1934
2000-07-01 2625
2000-10-01 3239
2001-01-01 2836
2001-04-01 3132
2001-07-01 2288
2001-10-01 1472
2002-01-01 1093
2002-04-01 1150
2002-07-01 2274
2002-10-01 2550
2003-01-01 3358
2003-04-01 3190
2003-07-01 2921
2003-10-01 2569
2004-01-01 1430
2004-04-01 1092
2004-07-01 1350
2004-10-01 1621
2005-01-01 1750
2005-04-01 2408
2005-07-01 1362
2005-10-01 1974
2006-01-01 2111
2006-04-01 3745
2006-07-01 4262
2006-10-01 3155
2007-01-01 2497
2007-04-01 1577
2007-07-01 1211
2007-10-01 1408
2008-01-01 1527
2008-04-01 1186
2008-07-01 1411
2008-10-01 1171
2009-01-01 1436
2009-04-01 1328
2009-07-01 1070
2009-10-01 1056
2010-01-01 606
2010-04-01 696
2010-07-01 1124
2010-10-01 861
2011-01-01 856
2011-04-01 410
2011-07-01 472
2011-10-01 722
2012-01-01 1194
2012-04-01 1587
2012-07-01 1131
2012-10-01 1322
2013-01-01 827
2013-04-01 465
2013-07-01 1090
2013-10-01 725
2014-01-01 925
2014-04-01 1674
2014-07-01 1742
2014-10-01 2041
2015-01-01 1990
2015-04-01 1306
2015-07-01 936
2015-10-01 1120
2016-01-01 1020
2016-04-01 1620
2016-07-01 3267
2016-10-01 5039
2017-01-01 5581
2017-04-01 5060
2017-07-01 4625
2017-10-01 2727
2018-01-01 2522
2018-04-01 3540