Quarterly Millions of US Dollars
1971-10-01 0
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 34
1979-01-01 160
1979-04-01 161
1979-07-01 164
1979-10-01 145
1980-01-01 64
1980-04-01 177
1980-07-01 261
1980-10-01 278
1981-01-01 303
1981-04-01 664
1981-07-01 861
1981-10-01 957
1982-01-01 1299
1982-04-01 943
1982-07-01 771
1982-10-01 932
1983-01-01 639
1983-04-01 732
1983-07-01 990
1983-10-01 913
1984-01-01 971
1984-04-01 812
1984-07-01 612
1984-10-01 1407
1985-01-01 1471
1985-04-01 1803
1985-07-01 1972
1985-10-01 1499
1986-01-01 1811
1986-04-01 1599
1986-07-01 1749
1986-10-01 1680
1987-01-01 1504
1987-04-01 2023
1987-07-01 2609
1987-10-01 3008
1988-01-01 3064
1988-04-01 2297
1988-07-01 1624
1988-10-01 1532
1989-01-01 1328
1989-04-01 1599
1989-07-01 1618
1989-10-01 1338
1990-01-01 2173
1990-04-01 1876
1990-07-01 1661
1990-10-01 1702
1991-01-01 827
1991-04-01 1120
1991-07-01 1694
1991-10-01 2114
1992-01-01 2617
1992-04-01 2397
1992-07-01 2841
1992-10-01 3360
1993-01-01 2779
1993-04-01 3262
1993-07-01 11837
1993-10-01 12124
1994-01-01 14593
1994-04-01 15945
1994-07-01 17592
1994-10-01 16521
1995-01-01 12789
1995-04-01 15534
1995-07-01 19264
1995-10-01 21851
1996-01-01 22997
1996-04-01 25677
1996-07-01 26009
1996-10-01 30207
1997-01-01 29904
1997-04-01 29975
1997-07-01 26668
1997-10-01 45034
1998-01-01 48150
1998-04-01 46744
1998-07-01 41739
1998-10-01 16637
1999-01-01 14113
1999-04-01 23451
1999-07-01 27309
1999-10-01 30321
2000-01-01 35145
2000-04-01 64442
2000-07-01 65628
2000-10-01 71416
2001-01-01 71436
2001-04-01 36346
2001-07-01 35102
2001-10-01 26259
2002-01-01 35217
2002-04-01 41330
2002-07-01 44500
2002-10-01 48071
2003-01-01 43805
2003-04-01 43770
2003-07-01 43351
2003-10-01 43131
2004-01-01 39681
2004-04-01 75726
2004-07-01 76788
2004-10-01 77622
2005-01-01 78775
2005-04-01 46515
2005-07-01 40910
2005-10-01 39786
2006-01-01 40509
2006-04-01 26954
2006-07-01 32840
2006-10-01 33365
2007-01-01 38710
2007-04-01 40628
2007-07-01 31228
2007-10-01 41646
2008-01-01 40612
2008-04-01 42875
2008-07-01 39961
2008-10-01 29792
2009-01-01 29264
2009-04-01 28890
2009-07-01 32846
2009-10-01 36525
2010-01-01 35367
2010-04-01 29807
2010-07-01 35685
2010-10-01 28604
2011-01-01 30114
2011-04-01 31466
2011-07-01 24367
2011-10-01 28184
2012-01-01 29180
2012-04-01 32455
2012-07-01 39317
2012-10-01 42993
2013-01-01 49085
2013-04-01 52789
2013-07-01 48990
2013-10-01 56964
2014-01-01 66309
2014-04-01 68013
2014-07-01 67011
2014-10-01 58091
2015-01-01 49788
2015-04-01 49456
2015-07-01 56538
2015-10-01 54966
2016-01-01 61414
2016-04-01 89875
2016-07-01 79465
2016-10-01 91116
2017-01-01 91638
2017-04-01 76825
2017-07-01 79598
2017-10-01 64740
2018-01-01 54113
2018-04-01 46863