Quarterly Millions of US Dollars
1988-04-01 13481
1988-07-01 13305
1988-10-01 16732
1989-01-01 15535
1989-04-01 10343
1989-07-01 13227
1989-10-01 17470
1990-01-01 18177
1990-04-01 8903
1990-07-01 13119
1990-10-01 16117
1991-01-01 17916
1991-04-01 12951
1991-07-01 17671
1991-10-01 20016
1992-01-01 20830
1992-04-01 16234
1992-07-01 16521
1992-10-01 19186
1993-01-01 17573
1993-04-01 15436
1993-07-01 14263
1993-10-01 15400
1994-01-01 17068
1994-04-01 16671
1994-07-01 19708
1994-10-01 21008
1995-01-01 16373
1995-04-01 14929
1995-07-01 17261
1995-10-01 14553
1996-01-01 17503
1996-04-01 14076
1996-07-01 16678
1996-10-01 16909
1997-01-01 16163
1997-04-01 11757
1997-07-01 13908
1997-10-01 12073
1998-01-01 12640
1998-04-01 8869
1998-07-01 10912
1998-10-01 9285
1999-01-01 11255
1999-04-01 9893
1999-07-01 11146
1999-10-01 11907
2000-01-01 9089
2000-04-01 6747
2000-07-01 6615
2000-10-01 4577
2001-01-01 4311
2001-04-01 3894
2001-07-01 5229
2001-10-01 5643
2002-01-01 6624
2002-04-01 4834
2002-07-01 7898
2002-10-01 6977
2003-01-01 5866
2003-04-01 4872
2003-07-01 6455
2003-10-01 6780
2004-01-01 6119
2004-04-01 4380
2004-07-01 4863
2004-10-01 5766
2005-01-01 4963
2005-04-01 4861
2005-07-01 6162
2005-10-01 5421
2006-01-01 4645
2006-04-01 3874
2006-07-01 5511
2006-10-01 6796
2007-01-01 5313
2007-04-01 5420
2007-07-01 9947
2007-10-01 9622
2008-01-01 8729
2008-04-01 8854
2008-07-01 9557
2008-10-01 9167
2009-01-01 11710
2009-04-01 23482
2009-07-01 20063
2009-10-01 24491
2010-01-01 21198
2010-04-01 19033
2010-07-01 24612
2010-10-01 28647
2011-01-01 28013
2011-04-01 30193
2011-07-01 23656
2011-10-01 25368
2012-01-01 29581
2012-04-01 27680
2012-07-01 31044
2012-10-01 36300
2013-01-01 28562
2013-04-01 18375
2013-07-01 21154
2013-10-01 18219
2014-01-01 9959
2014-04-01 16364
2014-07-01 20840
2014-10-01 24227
2015-01-01 21494
2015-04-01 18379
2015-07-01 22621
2015-10-01 19849
2016-01-01 21147
2016-04-01 17161
2016-07-01 17802
2016-10-01 15653
2017-01-01 16266
2017-04-01 13552
2017-07-01 14813
2017-10-01 13872
2018-01-01 15468