Quarter	US Dollars, monthly level
1990-01-01	44288402514.491000
1990-04-01	44412877578.843895
1990-07-01	45023787721.040000
1990-10-01	54403529445.996500
1991-01-01	52554968124.168396
1991-04-01	48313870905.952800
1991-07-01	46398715585.663000
1991-10-01	51701333745.158700
1992-01-01	51879694359.728000
1992-04-01	50812613676.707200
1992-07-01	51948634935.119500
1992-10-01	51252945980.624900
1993-01-01	45443755205.677000
1993-04-01	46317612530.494400
1993-07-01	43127899021.457900
1993-10-01	46553896062.747800
1994-01-01	47131352455.510200
1994-04-01	49706594946.441696
1994-07-01	51335190826.454000
1994-10-01	57743175661.254395
1995-01-01	59591758663.907300
1995-04-01	62861795731.088400
1995-07-01	58401465937.024000
1995-10-01	64397395989.240000
1996-01-01	63704864831.130600
1996-04-01	62117198299.414200
1996-07-01	60196087831.333100
1996-10-01	66944331996.035900
1997-01-01	62997429246.799904
1997-04-01	64730122387.109406
1997-07-01	61538370899.482700
1997-10-01	68325513247.121190
1998-01-01	65914936377.033200
1998-04-01	66332092790.832210
1998-07-01	64264209014.037900
1998-10-01	72003802171.694900
1999-01-01	67937301680.792110
1999-04-01	67579633729.867096
1999-07-01	68558792380.664500
1999-10-01	76683889429.508300
2000-01-01	78109724916.049300
2000-04-01	77868886474.543800
2000-07-01	76150994245.216900
2000-10-01	82684821378.935600
2001-01-01	81715044218.526110
2001-04-01	76333137368.884700
2001-07-01	71779617921.784000
2001-10-01	74550156177.358500
2002-01-01	71191331397.776200
2002-04-01	77423912344.453400
2002-07-01	77855254926.989100
2002-10-01	85176491155.257400
2003-01-01	90658637319.155610
2003-04-01	93139736703.050900
2003-07-01	88120371493.601000
2003-10-01	102495285707.717000
2004-01-01	105878856397.724000
2004-04-01	108753423648.347000
2004-07-01	109871653978.467000
2004-10-01	125977010223.025010
2005-01-01	122011758069.601990
2005-04-01	127727409379.904000
2005-07-01	127180366214.933000
2005-10-01	134826573493.521010
2006-01-01	139008335758.705000
2006-04-01	148119587292.306000
2006-07-01	148218189713.712000
2006-10-01	158215626292.658000
2007-01-01	161210105624.625000
2007-04-01	166279531019.155000
2007-07-01	171168565163.642000
2007-10-01	192059692038.762000
2008-01-01	201428447755.168000
2008-04-01	216251530539.511020
2008-07-01	210876877424.479000
2008-10-01	170183683549.833000
2009-01-01	139138000981.707980
2009-04-01	138754362623.170000
2009-07-01	150158970207.986000
2009-10-01	164401603377.393980
2010-01-01	162624336532.474000
2010-04-01	164547671920.853970
2010-07-01	171978010573.722020
2010-10-01	189760722831.238000
2011-01-01	200650139310.276000
2011-04-01	212270473846.537000
2011-07-01	208104929206.902980
2011-10-01	199352171618.047000
2012-01-01	200333836766.246000
2012-04-01	191759319051.926030
2012-07-01	185027053267.770000
2012-10-01	193880391225.206020
2013-01-01	191836539740.353000
2013-04-01	189357890472.268980
2013-07-01	192621782035.656000
2013-10-01	198724323528.746000
2014-01-01	199818022347.516000
2014-04-01	200516049008.712000
2014-07-01	194957717747.573030
2014-10-01	183373659070.611020
2015-01-01	167631300917.302000
2015-04-01	168747564929.371000
2015-07-01	165484981281.815000
2015-10-01	165374527795.391000
2016-01-01	160293409664.795000
2016-04-01	166582830773.873020
2016-07-01	163241195545.409000
2016-10-01	167138701835.572000
2017-01-01	177185842558.573000
2017-04-01	178851336486.515000
2017-07-01	185725839364.621000
2017-10-01	196792465274.128000
2018-01-01	208389174946.269000
2018-04-01	204761045729.482000