Quarterly Millions of US Dollars
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 5
1979-01-01 40
1979-04-01 40
1979-07-01 40
1979-10-01 35
1980-01-01 0
1980-04-01 50
1980-07-01 50
1980-10-01 90
1981-01-01 138
1981-04-01 167
1981-07-01 218
1981-10-01 179
1982-01-01 135
1982-04-01 78
1982-07-01 27
1982-10-01 104
1983-01-01 102
1983-04-01 184
1983-07-01 239
1983-10-01 258
1984-01-01 268
1984-04-01 151
1984-07-01 91
1984-10-01 403
1985-01-01 465
1985-04-01 566
1985-07-01 641
1985-10-01 330
1986-01-01 385
1986-04-01 293
1986-07-01 556
1986-10-01 644
1987-01-01 556
1987-04-01 830
1987-07-01 862
1987-10-01 817
1988-01-01 1008
1988-04-01 657
1988-07-01 464
1988-10-01 613
1989-01-01 463
1989-04-01 404
1989-07-01 299
1989-10-01 109
1990-01-01 25
1990-04-01 71
1990-07-01 81
1990-10-01 83
1991-01-01 150
1991-04-01 80
1991-07-01 275
1991-10-01 610
1992-01-01 788
1992-04-01 900
1992-07-01 930
1992-10-01 789
1993-01-01 754
1993-04-01 919
1993-07-01 1461
1993-10-01 2172
1994-01-01 2440
1994-04-01 3422
1994-07-01 3402
1994-10-01 3972
1995-01-01 3372
1995-04-01 3045
1995-07-01 3967
1995-10-01 5320
1996-01-01 6566
1996-04-01 8581
1996-07-01 8518
1996-10-01 9763
1997-01-01 9073
1997-04-01 8422
1997-07-01 9126
1997-10-01 15285
1998-01-01 18511
1998-04-01 19009
1998-07-01 16333
1998-10-01 6540
1999-01-01 3756
1999-04-01 8416
1999-07-01 10428
1999-10-01 10147
2000-01-01 10897
2000-04-01 15651
2000-07-01 16522
2000-10-01 17705
2001-01-01 17850
2001-04-01 10217
2001-07-01 8286
2001-10-01 8293
2002-01-01 7160
2002-04-01 6812
2002-07-01 7734
2002-10-01 6997
2003-01-01 8698
2003-04-01 12399
2003-07-01 12587
2003-10-01 13690
2004-01-01 13835
2004-04-01 11520
2004-07-01 17441
2004-10-01 17623
2005-01-01 19413
2005-04-01 29033
2005-07-01 20330
2005-10-01 18873
2006-01-01 17314
2006-04-01 6864
2006-07-01 9493
2006-10-01 9142
2007-01-01 8693
2007-04-01 11064
2007-07-01 8658
2007-10-01 9190
2008-01-01 8854
2008-04-01 7494
2008-07-01 5629
2008-10-01 5213
2009-01-01 6630
2009-04-01 6697
2009-07-01 8265
2009-10-01 8123
2010-01-01 8848
2010-04-01 7370
2010-07-01 8843
2010-10-01 7384
2011-01-01 6285
2011-04-01 5950
2011-07-01 5045
2011-10-01 5451
2012-01-01 5939
2012-04-01 6831
2012-07-01 7823
2012-10-01 11856
2013-01-01 14185
2013-04-01 15720
2013-07-01 14946
2013-10-01 15960
2014-01-01 18559
2014-04-01 15752
2014-07-01 19789
2014-10-01 16402
2015-01-01 14309
2015-04-01 16474
2015-07-01 13029
2015-10-01 12225
2016-01-01 12248
2016-04-01 10934
2016-07-01 9698
2016-10-01 12420
2017-01-01 12657
2017-04-01 14814
2017-07-01 13437
2017-10-01 10491
2018-01-01 6816
2018-04-01 7600