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 35
1979-04-01 35
1979-07-01 35
1979-10-01 51
1980-01-01 14
1980-04-01 16
1980-07-01 15
1980-10-01 0
1981-01-01 68
1981-04-01 137
1981-07-01 254
1981-10-01 298
1982-01-01 261
1982-04-01 210
1982-07-01 141
1982-10-01 251
1983-01-01 217
1983-04-01 226
1983-07-01 340
1983-10-01 197
1984-01-01 204
1984-04-01 182
1984-07-01 56
1984-10-01 367
1985-01-01 374
1985-04-01 450
1985-07-01 484
1985-10-01 420
1986-01-01 602
1986-04-01 585
1986-07-01 737
1986-10-01 714
1987-01-01 596
1987-04-01 793
1987-07-01 1110
1987-10-01 1206
1988-01-01 1165
1988-04-01 950
1988-07-01 599
1988-10-01 402
1989-01-01 576
1989-04-01 462
1989-07-01 327
1989-10-01 255
1990-01-01 1005
1990-04-01 1025
1990-07-01 1029
1990-10-01 1137
1991-01-01 324
1991-04-01 515
1991-07-01 750
1991-10-01 1130
1992-01-01 1478
1992-04-01 1334
1992-07-01 1860
1992-10-01 1811
1993-01-01 1348
1993-04-01 1609
1993-07-01 3855
1993-10-01 4195
1994-01-01 5628
1994-04-01 5677
1994-07-01 5721
1994-10-01 4582
1995-01-01 2905
1995-04-01 3716
1995-07-01 5862
1995-10-01 7336
1996-01-01 8243
1996-04-01 8070
1996-07-01 6591
1996-10-01 6732
1997-01-01 6936
1997-04-01 8047
1997-07-01 8538
1997-10-01 7879
1998-01-01 8435
1998-04-01 7483
1998-07-01 5677
1998-10-01 6226
1999-01-01 4435
1999-04-01 4404
1999-07-01 4731
1999-10-01 5016
2000-01-01 5358
2000-04-01 6725
2000-07-01 6764
2000-10-01 5696
2001-01-01 6969
2001-04-01 7905
2001-07-01 8391
2001-10-01 9353
2002-01-01 8785
2002-04-01 8966
2002-07-01 8776
2002-10-01 8781
2003-01-01 9411
2003-04-01 11310
2003-07-01 12380
2003-10-01 14262
2004-01-01 13609
2004-04-01 11570
2004-07-01 10282
2004-10-01 7113
2005-01-01 6191
2005-04-01 4443
2005-07-01 4449
2005-10-01 5383
2006-01-01 5886
2006-04-01 7218
2006-07-01 8503
2006-10-01 7975
2007-01-01 7105
2007-04-01 7558
2007-07-01 7344
2007-10-01 9490
2008-01-01 10519
2008-04-01 8955
2008-07-01 8115
2008-10-01 6001
2009-01-01 4827
2009-04-01 3355
2009-07-01 3077
2009-10-01 4605
2010-01-01 7467
2010-04-01 7536
2010-07-01 9598
2010-10-01 6367
2011-01-01 6566
2011-04-01 8338
2011-07-01 5253
2011-10-01 6483
2012-01-01 4637
2012-04-01 4178
2012-07-01 8381
2012-10-01 8152
2013-01-01 11027
2013-04-01 13095
2013-07-01 9961
2013-10-01 12603
2014-01-01 16025
2014-04-01 15266
2014-07-01 14332
2014-10-01 12613
2015-01-01 8475
2015-04-01 8084
2015-07-01 12458
2015-10-01 14006
2016-01-01 17328
2016-04-01 22528
2016-07-01 18091
2016-10-01 22247
2017-01-01 20616
2017-04-01 21931
2017-07-01 24817
2017-10-01 17794
2018-01-01 16020
2018-04-01 12104