Quarterly Millions of US Dollars
1987-01-01 1094
1987-04-01 894
1987-07-01 1002
1987-10-01 958
1988-01-01 1227
1988-04-01 989
1988-07-01 984
1988-10-01 951
1989-01-01 869
1989-04-01 1443
1989-07-01 1618
1989-10-01 1924
1990-01-01 2479
1990-04-01 3451
1990-07-01 3318
1990-10-01 2928
1991-01-01 2413
1991-04-01 2539
1991-07-01 2262
1991-10-01 2685
1992-01-01 3777
1992-04-01 4222
1992-07-01 4234
1992-10-01 3293
1993-01-01 3570
1993-04-01 4523
1993-07-01 538
1993-10-01 636
1994-01-01 754
1994-04-01 640
1994-07-01 1059
1994-10-01 1041
1995-01-01 545
1995-04-01 527
1995-07-01 731
1995-10-01 911
1996-01-01 1257
1996-04-01 1574
1996-07-01 1860
1996-10-01 2947
1997-01-01 3801
1997-04-01 4538
1997-07-01 4783
1997-10-01 4721
1998-01-01 4998
1998-04-01 6336
1998-07-01 8195
1998-10-01 8904
1999-01-01 10400
1999-04-01 10159
1999-07-01 10810
1999-10-01 11321
2000-01-01 11844
2000-04-01 12804
2000-07-01 12584
2000-10-01 14525
2001-01-01 15987
2001-04-01 17168
2001-07-01 17896
2001-10-01 18806
2002-01-01 19192
2002-04-01 20157
2002-07-01 20090
2002-10-01 20811
2003-01-01 19314
2003-04-01 19613
2003-07-01 20081
2003-10-01 20821
2004-01-01 20741
2004-04-01 20127
2004-07-01 20954
2004-10-01 23698
2005-01-01 24855
2005-04-01 26848
2005-07-01 28911
2005-10-01 29358
2006-01-01 32166
2006-04-01 36971
2006-07-01 38938
2006-10-01 42450
2007-01-01 48193
2007-04-01 50728
2007-07-01 51354
2007-10-01 52400
2008-01-01 58393
2008-04-01 58608
2008-07-01 59846
2008-10-01 57625
2009-01-01 51266
2009-04-01 63741
2009-07-01 66380
2009-10-01 65606
2010-01-01 66703
2010-04-01 63220
2010-07-01 64976
2010-10-01 62506
2011-01-01 55975
2011-04-01 53787
2011-07-01 51577
2011-10-01 49571
2012-01-01 48976
2012-04-01 46918
2012-07-01 47231
2012-10-01 45300
2013-01-01 45431
2013-04-01 43811
2013-07-01 43228
2013-10-01 41195
2014-01-01 39460
2014-04-01 38504
2014-07-01 37560
2014-10-01 37354
2015-01-01 40420
2015-04-01 46403
2015-07-01 46679
2015-10-01 44897
2016-01-01 46662
2016-04-01 45659
2016-07-01 36755
2016-10-01 35197
2017-01-01 33970
2017-04-01 34263
2017-07-01 34343
2017-10-01 33887
2018-01-01 33095
2018-04-01 28780