Quarterly Millions of US Dollars
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 37
1981-04-01 215
1981-07-01 217
1981-10-01 224
1982-01-01 368
1982-04-01 602
1982-07-01 599
1982-10-01 605
1983-01-01 540
1983-04-01 360
1983-07-01 544
1983-10-01 863
1984-01-01 2654
1984-04-01 2599
1984-07-01 2712
1984-10-01 3916
1985-01-01 2929
1985-04-01 3274
1985-07-01 3315
1985-10-01 3251
1986-01-01 2564
1986-04-01 2675
1986-07-01 3194
1986-10-01 2161
1987-01-01 2123
1987-04-01 3954
1987-07-01 3366
1987-10-01 3647
1988-01-01 3665
1988-04-01 1439
1988-07-01 1349
1988-10-01 1310
1989-01-01 1169
1989-04-01 2002
1989-07-01 2249
1989-10-01 1803
1990-01-01 1921
1990-04-01 689
1990-07-01 593
1990-10-01 2020
1991-01-01 2078
1991-04-01 1855
1991-07-01 2310
1991-10-01 1575
1992-01-01 1499
1992-04-01 2426
1992-07-01 1866
1992-10-01 1842
1993-01-01 2755
1993-04-01 2361
1993-07-01 8814
1993-10-01 8312
1994-01-01 7661
1994-04-01 7871
1994-07-01 8895
1994-10-01 14730
1995-01-01 14419
1995-04-01 14037
1995-07-01 13637
1995-10-01 12289
1996-01-01 13382
1996-04-01 14212
1996-07-01 10840
1996-10-01 14919
1997-01-01 12810
1997-04-01 14752
1997-07-01 14863
1997-10-01 12297
1998-01-01 11317
1998-04-01 12262
1998-07-01 11588
1998-10-01 9803
1999-01-01 7899
1999-04-01 6568
1999-07-01 8075
1999-10-01 6643
2000-01-01 5694
2000-04-01 4630
2000-07-01 3884
2000-10-01 4037
2001-01-01 2790
2001-04-01 3185
2001-07-01 2660
2001-10-01 3710
2002-01-01 5436
2002-04-01 6420
2002-07-01 5700
2002-10-01 4826
2003-01-01 4147
2003-04-01 3212
2003-07-01 2788
2003-10-01 2688
2004-01-01 1331
2004-04-01 1420
2004-07-01 1419
2004-10-01 4113
2005-01-01 4258
2005-04-01 3902
2005-07-01 4126
2005-10-01 1841
2006-01-01 2157
2006-04-01 2134
2006-07-01 1962
2006-10-01 2501
2007-01-01 2821
2007-04-01 3231
2007-07-01 3020
2007-10-01 7043
2008-01-01 7768
2008-04-01 8925
2008-07-01 7685
2008-10-01 7551
2009-01-01 3639
2009-04-01 8646
2009-07-01 8990
2009-10-01 8592
2010-01-01 12984
2010-04-01 8380
2010-07-01 12727
2010-10-01 18016
2011-01-01 13091
2011-04-01 9488
2011-07-01 5813
2011-10-01 12502
2012-01-01 6811
2012-04-01 5723
2012-07-01 8355
2012-10-01 17487
2013-01-01 17398
2013-04-01 17509
2013-07-01 18629
2013-10-01 21720
2014-01-01 22514
2014-04-01 22477
2014-07-01 23439
2014-10-01 29967
2015-01-01 20089
2015-04-01 9447
2015-07-01 13311
2015-10-01 19948
2016-01-01 13618
2016-04-01 15441
2016-07-01 16286
2016-10-01 19017
2017-01-01 24896
2017-04-01 20960
2017-07-01 17267
2017-10-01 14767
2018-01-01 6336
2018-04-01 6718