Quarterly Millions of US Dollars
1991-07-01 31
1991-10-01 84
1992-01-01 82
1992-04-01 384
1992-07-01 1127
1992-10-01 1122
1993-01-01 1622
1993-04-01 1621
1993-07-01 1652
1993-10-01 1673
1994-01-01 1616
1994-04-01 1580
1994-07-01 1574
1994-10-01 2224
1995-01-01 3641
1995-04-01 4397
1995-07-01 5735
1995-10-01 5733
1996-01-01 8459
1996-04-01 8415
1996-07-01 9114
1996-10-01 9690
1997-01-01 12072
1997-04-01 12924
1997-07-01 13253
1997-10-01 12480
1998-01-01 13319
1998-04-01 12863
1998-07-01 13159
1998-10-01 15359
1999-01-01 14868
1999-04-01 15458
1999-07-01 19243
1999-10-01 19286
2000-01-01 19050
2000-04-01 19444
2000-07-01 18660
2000-10-01 17759
2001-01-01 16805
2001-04-01 17451
2001-07-01 18084
2001-10-01 16297
2002-01-01 14253
2002-04-01 15658
2002-07-01 14465
2002-10-01 13564
2003-01-01 12245
2003-04-01 11670
2003-07-01 14483
2003-10-01 15491
2004-01-01 15668
2004-04-01 14900
2004-07-01 14530
2004-10-01 15224
2005-01-01 14631
2005-04-01 13016
2005-07-01 12268
2005-10-01 11390
2006-01-01 10029
2006-04-01 9472
2006-07-01 9153
2006-10-01 9069
2007-01-01 8337
2007-04-01 8090
2007-07-01 8290
2007-10-01 8480
2008-01-01 8302
2008-04-01 8224
2008-07-01 8210
2008-10-01 8284
2009-01-01 7828
2009-04-01 7569
2009-07-01 6256
2009-10-01 6049
2010-01-01 6000
2010-04-01 6246
2010-07-01 6545
2010-10-01 6670
2011-01-01 6497
2011-04-01 6620
2011-07-01 6458
2011-10-01 6420
2012-01-01 6141
2012-04-01 6289
2012-07-01 6661
2012-10-01 6171
2013-01-01 5778
2013-04-01 5452
2013-07-01 4186
2013-10-01 3919
2014-01-01 3976
2014-04-01 4044
2014-07-01 3764
2014-10-01 3485
2015-01-01 3460
2015-04-01 3395
2015-07-01 3451
2015-10-01 3446
2016-01-01 3312
2016-04-01 3588
2016-07-01 3632
2016-10-01 3192
2017-01-01 3325
2017-04-01 3322
2017-07-01 3307
2017-10-01 3305
2018-01-01 2560
2018-04-01 2467