Quarter	US Dollars, monthly level
1990-01-01	129146149654.81999
1990-04-01	129624667345.74599
1990-07-01	128472932073.00500
1990-10-01	146761389981.69200
1991-01-01	134347580749.13402
1991-04-01	123716634036.72499
1991-07-01	123604829873.60200
1991-10-01	146076796992.89100
1992-01-01	135156946459.84499
1992-04-01	138896887590.97200
1992-07-01	148280811618.54102
1992-10-01	149005871437.44702
1993-01-01	131239876629.98701
1993-04-01	145507398518.79498
1993-07-01	136482320102.67000
1993-10-01	155472937685.21002
1994-01-01	142662277136.80600
1994-04-01	160023773168.27197
1994-07-01	161255792644.60500
1994-10-01	185330352047.80900
1995-01-01	186046056987.43500
1995-04-01	204027729553.57500
1995-07-01	188625130676.24300
1995-10-01	212569542966.48102
1996-01-01	199825294719.35000
1996-04-01	203781704148.37200
1996-07-01	203000884469.00000
1996-10-01	224949360415.37302
1997-01-01	196626388306.49002
1997-04-01	215029193075.11900
1997-07-01	207230955097.29700
1997-10-01	227636644758.20500
1998-01-01	207099271931.91998
1998-04-01	219952783239.57700
1998-07-01	214074619462.15600
1998-10-01	232114143234.28098
1999-01-01	205946571826.27500
1999-04-01	209869217543.39600
1999-07-01	215331042484.69300
1999-10-01	234458837282.47900
2000-01-01	223504215744.45900
2000-04-01	226285401041.15298
2000-07-01	223242343980.99800
2000-10-01	239799896698.73600
2001-01-01	240053860019.32700
2001-04-01	231752781418.38898
2001-07-01	228548593145.17600
2001-10-01	242007149021.42902
2002-01-01	226404954801.40200
2002-04-01	250352186747.68002
2002-07-01	261634719638.24402
2002-10-01	276775390420.22100
2003-01-01	275499001657.76105
2003-04-01	291202040261.56200
2003-07-01	292526854226.27000
2003-10-01	328363882270.84100
2004-01-01	337002390214.27900
2004-04-01	348991335085.95200
2004-07-01	348256510885.70300
2004-10-01	390640870350.61400
2005-01-01	368672703726.06100
2005-04-01	389951255156.82200
2005-07-01	382834623243.88400
2005-10-01	394107436165.78204
2006-01-01	396581400881.69900
2006-04-01	427861768590.83800
2006-07-01	434329098279.56396
2006-10-01	480487048241.48000
2007-01-01	472299658384.92596
2007-04-01	502044998242.64600
2007-07-01	517694391252.91003
2007-10-01	570812875972.54590
2008-01-01	578864508424.48600
2008-04-01	632278002863.46090
2008-07-01	598051942101.94100
2008-10-01	494380428482.64703
2009-01-01	397732100086.93400
2009-04-01	427285546058.05800
2009-07-01	464829210232.71200
2009-10-01	505359087053.63403
2010-01-01	477387919701.89700
2010-04-01	487841950806.28100
2010-07-01	515572692383.00397
2010-10-01	567785044081.61800
2011-01-01	575599060700.04700
2011-04-01	626547649459.48500
2011-07-01	617412824318.13500
2011-10-01	611027911846.27600
2012-01-01	599645904868.77800
2012-04-01	603777613336.47190
2012-07-01	589182016795.26500
2012-10-01	623711163932.11800
2013-01-01	609479614330.55000
2013-04-01	625304198812.64800
2013-07-01	625044909968.25900
2013-10-01	659581268730.09500
2014-01-01	639367465806.62600
2014-04-01	660879864267.24900
2014-07-01	643204876861.90700
2014-10-01	632099753756.75900
2015-01-01	553852640567.54800
2015-04-01	576298984238.79600
2015-07-01	562776033019.19200
2015-10-01	573086684324.88700
2016-01-01	536930574687.18494
2016-04-01	588433275931.99110
2016-07-01	564406453962.91990
2016-10-01	577213167050.49610
2017-01-01	577470145406.51110
2017-04-01	603010781111.26800
2017-07-01	629785818873.04300
2017-10-01	669378579720.28810
2018-01-01	680024867463.84900
2018-04-01	681243525234.98000