Quarterly Millions of US Dollars
1977-01-01 106
1977-04-01 243
1977-07-01 246
1977-10-01 327
1978-01-01 342
1978-04-01 442
1978-07-01 480
1978-10-01 488
1979-01-01 530
1979-04-01 532
1979-07-01 553
1979-10-01 546
1980-01-01 501
1980-04-01 548
1980-07-01 541
1980-10-01 518
1981-01-01 492
1981-04-01 454
1981-07-01 460
1981-10-01 481
1982-01-01 604
1982-04-01 597
1982-07-01 585
1982-10-01 617
1983-01-01 696
1983-04-01 686
1983-07-01 681
1983-10-01 809
1984-01-01 1119
1984-04-01 1010
1984-07-01 1077
1984-10-01 1664
1985-01-01 2160
1985-04-01 2329
1985-07-01 2458
1985-10-01 2599
1986-01-01 2480
1986-04-01 2563
1986-07-01 2259
1986-10-01 1597
1987-01-01 1442
1987-04-01 1233
1987-07-01 1233
1987-10-01 1456
1988-01-01 1343
1988-04-01 1119
1988-07-01 1091
1988-10-01 1155
1989-01-01 1075
1989-04-01 958
1989-07-01 888
1989-10-01 761
1990-01-01 734
1990-04-01 762
1990-07-01 1129
1990-10-01 1738
1991-01-01 1536
1991-04-01 1491
1991-07-01 1575
1991-10-01 2780
1992-01-01 3549
1992-04-01 5256
1992-07-01 7473
1992-10-01 7107
1993-01-01 9875
1993-04-01 10965
1993-07-01 13392
1993-10-01 13302
1994-01-01 13746
1994-04-01 14538
1994-07-01 16583
1994-10-01 16313
1995-01-01 22492
1995-04-01 22715
1995-07-01 21755
1995-10-01 21417
1996-01-01 20817
1996-04-01 20326
1996-07-01 22873
1996-10-01 23164
1997-01-01 22919
1997-04-01 23589
1997-07-01 24554
1997-10-01 23936
1998-01-01 24188
1998-04-01 24278
1998-07-01 27325
1998-10-01 28968
1999-01-01 26344
1999-04-01 27120
1999-07-01 27196
1999-10-01 26833
2000-01-01 24490
2000-04-01 24443
2000-07-01 24610
2000-10-01 25207
2001-01-01 24230
2001-04-01 24050
2001-07-01 25198
2001-10-01 23972
2002-01-01 27188
2002-04-01 28968
2002-07-01 28599
2002-10-01 30303
2003-01-01 29560
2003-04-01 36303
2003-07-01 37223
2003-10-01 38889
2004-01-01 38353
2004-04-01 43106
2004-07-01 42269
2004-10-01 45414
2005-01-01 41891
2005-04-01 39697
2005-07-01 39330
2005-10-01 39980
2006-01-01 41533
2006-04-01 42797
2006-07-01 39861
2006-10-01 49632
2007-01-01 49140
2007-04-01 50317
2007-07-01 52182
2007-10-01 52958
2008-01-01 64744
2008-04-01 66551
2008-07-01 65961
2008-10-01 64857
2009-01-01 65073
2009-04-01 71227
2009-07-01 80624
2009-10-01 79439
2010-01-01 79400
2010-04-01 74361
2010-07-01 80871
2010-10-01 78618
2011-01-01 82932
2011-04-01 88633
2011-07-01 81728
2011-10-01 78519
2012-01-01 78777
2012-04-01 73635
2012-07-01 68778
2012-10-01 70177
2013-01-01 71165
2013-04-01 65609
2013-07-01 60618
2013-10-01 62578
2014-01-01 61508
2014-04-01 60760
2014-07-01 56802
2014-10-01 54479
2015-01-01 42170
2015-04-01 41927
2015-07-01 39121
2015-10-01 37681
2016-01-01 40103
2016-04-01 37773
2016-07-01 37903
2016-10-01 34482
2017-01-01 29291
2017-04-01 30155
2017-07-01 25035
2017-10-01 25175
2018-01-01 20260
2018-04-01 17644