Quarter	Millions of US Dollars
1989-01-01	521354
1989-04-01	537469
1989-07-01	558770
1989-10-01	578372
1990-01-01	580707
1990-04-01	598573
1990-07-01	618768
1990-10-01	627265
1991-01-01	640986
1991-04-01	663254
1991-07-01	685716
1991-10-01	678687
1992-01-01	661749
1992-04-01	683990
1992-07-01	669391
1992-10-01	655547
1993-01-01	682937
1993-04-01	693397
1993-07-01	685527
1993-10-01	696160
1994-01-01	689094
1994-04-01	705729
1994-07-01	736473
1994-10-01	708209
1995-01-01	728496
1995-04-01	753161
1995-07-01	780595
1995-10-01	776708
1996-01-01	789858
1996-04-01	796126
1996-07-01	802366
1996-10-01	801082
1997-01-01	812108
1997-04-01	821039
1997-07-01	828929
1997-10-01	815633
1998-01-01	837274
1998-04-01	836341
1998-07-01	820937
1998-10-01	817175
1999-01-01	851545
1999-04-01	872099
1999-07-01	886281
1999-10-01	905328
2000-01-01	915353
2000-04-01	909134
2000-07-01	893328
2000-10-01	896974
2001-01-01	868977
2001-04-01	895253
2001-07-01	881870
2001-10-01	890359
2002-01-01	896015
2002-04-01	941448
2002-07-01	905658
2002-10-01	905268
2003-01-01	956983
2003-04-01	1023857
2003-07-01	1035977
2003-10-01	1088653
2004-01-01	1077995
2004-04-01	1061060
2004-07-01	1113579
2004-10-01	1179517
2005-01-01	1194611
2005-04-01	1180356
2005-07-01	1237031
2005-10-01	1253572
2006-01-01	1281324
2006-04-01	1328409
2006-07-01	1339437
2006-10-01	1327790
2007-01-01	1359532
2007-04-01	1468749
2007-07-01	1518416
2007-10-01	1543464
2008-01-01	1510087
2008-04-01	1550644
2008-07-01	1514287
2008-10-01	1367989
2009-01-01	1379746
2009-04-01	1519673
2009-07-01	1621601
2009-10-01	1667768
2010-01-01	1737289
2010-04-01	1727209
2010-07-01	1776209
2010-10-01	1862920
2011-01-01	1944706
2011-04-01	1994967
2011-07-01	1909005
2011-10-01	1960530
2012-01-01	2055799
2012-04-01	2054223
2012-07-01	2158903
2012-10-01	2169391
2013-01-01	2169689
2013-04-01	2170672
2013-07-01	2261713
2013-10-01	2237963
2014-01-01	2184897
2014-04-01	2301220
2014-07-01	2265317
2014-10-01	2204052
2015-01-01	2084235
2015-04-01	2171386
2015-07-01	2073637
2015-10-01	2039295
2016-01-01	2173809
2016-04-01	2216786
2016-07-01	2216178
2016-10-01	2180192
2017-01-01	2209081
2017-04-01	2320978
2017-07-01	2426772
2017-10-01	2426653
2018-01-01	2400837