Quarter	Millions of US Dollars
1989-10-01	82368
1990-01-01	83831
1990-04-01	88430
1990-07-01	98572
1990-10-01	104301
1991-01-01	91573
1991-04-01	88302
1991-07-01	99548
1991-10-01	110283
1992-01-01	104792
1992-04-01	119021
1992-07-01	135998
1992-10-01	120223
1993-01-01	124769
1993-04-01	125177
1993-07-01	137447
1993-10-01	131021
1994-01-01	139599
1994-04-01	150408
1994-07-01	156270
1994-10-01	162097
1995-01-01	193577
1995-04-01	199614
1995-07-01	197781
1995-10-01	192757
1996-01-01	174818
1996-04-01	175431
1996-07-01	185982
1996-10-01	181873
1997-01-01	172985
1997-04-01	169926
1997-07-01	171142
1997-10-01	170918
1998-01-01	171976
1998-04-01	179997
1998-07-01	194519
1998-10-01	195228
1999-01-01	202498
1999-04-01	200169
1999-07-01	215035
1999-10-01	214690
2000-01-01	215280
2000-04-01	224329
2000-07-01	213396
2000-10-01	222865
2001-01-01	223471
2001-04-01	219201
2001-07-01	234527
2001-10-01	232354
2002-01-01	240899
2002-04-01	276664
2002-07-01	273435
2002-10-01	288917
2003-01-01	306688
2003-04-01	328725
2003-07-01	334367
2003-10-01	363774
2004-01-01	364785
2004-04-01	375386
2004-07-01	387436
2004-10-01	418332
2005-01-01	419787
2005-04-01	408241
2005-07-01	408326
2005-10-01	401898
2006-01-01	428985
2006-04-01	463116
2006-07-01	461324
2006-10-01	490439
2007-01-01	534328
2007-04-01	563180
2007-07-01	598861
2007-10-01	599716
2008-01-01	653414
2008-04-01	663380
2008-07-01	623696
2008-10-01	645106
2009-01-01	630379
2009-04-01	680196
2009-07-01	701986
2009-10-01	683555
2010-01-01	643540
2010-04-01	595526
2010-07-01	661912
2010-10-01	645711
2011-01-01	691755
2011-04-01	704543
2011-07-01	669452
2011-10-01	643499
2012-01-01	662960
2012-04-01	624682
2012-07-01	638093
2012-10-01	637378
2013-01-01	618201
2013-04-01	631784
2013-07-01	656111
2013-10-01	659859
2014-01-01	654677
2014-04-01	655990
2014-07-01	593569
2014-10-01	565781
2015-01-01	501104
2015-04-01	517834
2015-07-01	511244
2015-10-01	496854
2016-01-01	524209
2016-04-01	508668
2016-07-01	497254
2016-10-01	483205
2017-01-01	478825
2017-04-01	509516
2017-07-01	520823
2017-10-01	525066
2018-01-01	537195