Month	Dollars
1950-12-01	147000000
1951-12-01	231000000
1952-12-01	79000000
1953-12-01	65000000
1954-12-01	163500000
1955-12-01	226500000
1956-12-01	210000000
1971-01-01	159540000
1971-02-01	151840000
1971-03-01	180940000
1971-04-01	149790000
1971-05-01	127190000
1971-06-01	102430000
1971-07-01	177730000
1971-08-01	167930000
1971-09-01	166730000
1971-10-01	180230000
1971-11-01	185230000
1971-12-01	142632600
1972-01-01	228654900
1972-02-01	208654900
1972-03-01	264301800
1972-04-01	297892100
1972-05-01	291865800
1972-06-01	361192700
1972-07-01	389192700
1972-08-01	368879000
1972-09-01	470579000
1972-10-01	523968700
1972-11-01	548255000
1972-12-01	572201300
1973-01-01	606101300
1973-02-01	607223400
1973-03-01	680375700
1973-04-01	647366800
1973-05-01	637239900
1973-06-01	770451300
1973-07-01	854551300
1973-08-01	815381100
1973-09-01	914023700
1973-10-01	873230700
1973-11-01	789782700
1973-12-01	804734800
1974-01-01	865950600
1974-02-01	847742000
1974-03-01	930114700
1974-04-01	1278061700
1974-05-01	1260737500
1974-06-01	1383756600
1974-07-01	1824632500
1974-08-01	1680868800
1974-09-01	1586591600
1974-10-01	2023980800
1974-11-01	1732075400
1974-12-01	1489500500
1975-01-01	1621916200
1975-02-01	1392799000
1975-03-01	938383900
1975-04-01	906979900
1975-05-01	551110300
1975-06-01	651785200
1975-07-01	727091000
1975-08-01	566947400
1975-09-01	435293100
1975-10-01	779329700
1975-11-01	558535900
1975-12-01	584333700
1976-01-01	1036721500
1976-02-01	863921400
1976-03-01	757742700
1976-04-01	1184187700
1976-05-01	1101337800
1976-06-01	951053100
1976-07-01	1418756600
1976-08-01	1300272100
1976-09-01	1199897800
1976-10-01	1723388100
1976-11-01	1712868300
1976-12-01	1496517000
1977-01-01	1784178400
1977-02-01	1781971700
1977-03-01	1787521600
1977-04-01	2272403600
1977-05-01	2191395400
1977-06-01	2066030500
1977-07-01	2460654700
1977-08-01	2444664700
1977-09-01	2407301100
1977-10-01	2857512100
1977-11-01	2817502300
1977-12-01	2508735400
1978-01-01	2676572500
1978-02-01	2456511200
1978-03-01	2302392200
1978-04-01	2503471500
1978-05-01	2270077200
1978-06-01	2162992600
1978-07-01	2633591400
1978-08-01	2478534400
1978-09-01	2374662700
1978-10-01	2862664400
1978-11-01	2715153800
1978-12-01	2626116700
1979-01-01	2996386400
1979-02-01	2939270300
1979-03-01	2939641200
1979-04-01	3156294300
1979-05-01	3257353200
1979-06-01	3194835800
1979-07-01	3445923500
1979-08-01	3354585900
1979-09-01	3290478700
1979-10-01	3785367600
1979-11-01	3980958300
1979-12-01	4061820800
1980-01-01	4712284100
1980-02-01	4570357800
1980-03-01	4182556400
1980-04-01	4824634500
1980-05-01	5013790300
1980-06-01	5407750300
1980-07-01	6019275900
1980-08-01	5835510300
1980-09-01	5626552500
1980-10-01	6101104200
1980-11-01	5605301000
1980-12-01	5391696400
1981-01-01	5993477300
1981-02-01	5525356000
1981-03-01	6145442100
1981-04-01	6603286300
1981-05-01	6163986500
1981-06-01	5835326400
1981-07-01	6421050900
1981-08-01	5917076100
1981-09-01	5560314400
1981-10-01	6224846500
1981-11-01	5784128700
1981-12-01	5014169700
1982-01-01	5430245500
1982-02-01	5353025400
1982-03-01	5234876800
1982-04-01	4750904100
1982-05-01	4483252500
1982-06-01	3712672800
1982-07-01	3859007700
1982-08-01	3348680300
1982-09-01	3279003100
1982-10-01	3312552000
1982-11-01	3166051800
1982-12-01	3144462600
1983-01-01	3059586000
1983-02-01	2765222400
1983-03-01	1831382600
1983-04-01	2179942100
1983-05-01	2552574000
1983-06-01	2703049600
1983-07-01	3153125000
1983-08-01	3428842100
1983-09-01	3506134600
1983-10-01	3615773000
1983-11-01	3644986700
1983-12-01	3718393200
1984-01-01	3745074000
1984-02-01	3986459500
1984-03-01	4065954700
1984-04-01	4121174300
1984-05-01	4172586500
1984-06-01	4300844600
1984-07-01	4534341000
1984-08-01	4566602300
1984-09-01	4749917200
1984-10-01	4747715500
1984-11-01	4722172700
1984-12-01	4773006300
1985-01-01	4767115900
1985-02-01	4717218200
1985-03-01	5049448300
1985-04-01	5077099600
1985-05-01	5099106100
1985-06-01	4934921500
1985-07-01	5059700000
1985-08-01	5057924700
1985-09-01	5093788700
1985-10-01	5214756800
1985-11-01	5328014400
1985-12-01	4974241400
1986-01-01	5063615700
1986-02-01	5259029600
1986-03-01	4860639700
1986-04-01	5040974500
1986-05-01	4887344500
1986-06-01	4858808400
1986-07-01	4993418900
1986-08-01	4991464100
1986-09-01	4639892900
1986-10-01	4529591200
1986-11-01	4593476300
1986-12-01	4051268500
1987-01-01	3565861500
1987-02-01	3888279200
1987-03-01	4005313900
1987-04-01	4491013100
1987-05-01	4111235900
1987-06-01	4146670000
1987-07-01	5428107000
1987-08-01	5019833900
1987-09-01	4975046700
1987-10-01	5060095700
1987-11-01	5420780100
1987-12-01	5592324800
1988-01-01	5085190800
1988-02-01	5158479800
1988-03-01	5410299300
1988-04-01	5259546700
1988-05-01	5246196700
1988-06-01	5304115500
1988-07-01	4868386300
1988-08-01	4955721200
1988-09-01	4955888900
1988-10-01	4730060100
1988-11-01	5056157400
1988-12-01	5048319800
1989-01-01	4710474900
1989-02-01	4608890100
1989-03-01	4850675200
1989-04-01	5222340000
1989-05-01	4905556300
1989-06-01	4376759200
1989-07-01	4703495100
1989-08-01	4371069700
1989-09-01	4379514400
1989-10-01	4602836400
1989-11-01	4504496300
1989-12-01	5453531100
1990-01-01	5160102100
1990-02-01	4948509900
1990-03-01	5239326500
1990-04-01	4640722600
1990-05-01	4006283700
1990-06-01	4693005100
1990-07-01	5391664400
1990-08-01	5680982300
1990-09-01	5424284200
1990-10-01	5735912600
1990-11-01	6065864400
1990-12-01	7459057900
1991-01-01	7332079900
1991-02-01	8493263400
1991-03-01	8069279000
1991-04-01	8090226600
1991-05-01	8412777100
1991-06-01	8673323500
1991-07-01	8538770500
1991-08-01	8467382100
1991-09-01	8478819000
1991-10-01	8566956500
1991-11-01	9284812600
1991-12-01	9257939400
1992-01-01	9495644600
1992-02-01	9249738800
1992-03-01	9619762000
1992-04-01	10087924100
1992-05-01	10630520600
1992-06-01	10714307000
1992-07-01	11025426600
1992-08-01	11212553800
1992-09-01	10724123600
1992-10-01	10413007400
1992-11-01	10744380200
1992-12-01	10448611000
1993-01-01	10876512500
1993-02-01	10935752000
1993-03-01	11046356900
1993-04-01	11198153100
1993-05-01	11026866100
1993-06-01	11063483500
1993-07-01	10967380100
1993-08-01	11101100300
1993-09-01	11236323100
1993-10-01	11176400600
1993-11-01	11198757800
1993-12-01	11262656800
1994-01-01	11366049400
1994-02-01	11676782900
1994-03-01	11640073900
1994-04-01	10779041600
1994-05-01	10608769200
1994-06-01	10914868200
1994-07-01	10644108900
1994-08-01	11312970700
1994-09-01	11346443600
1994-10-01	11443862100
1994-11-01	12351166600
1994-12-01	12132678600
1995-01-01	11953481500
1995-02-01	11939336800
1995-03-01	12287789000
1995-04-01	12329802000
1995-05-01	12468106300
1995-06-01	12844861500
1995-07-01	13298916300
1995-08-01	13187303200
1995-09-01	13249138300
1995-10-01	13265652900
1995-11-01	13574956200
1995-12-01	13708247100
1996-01-01	13731421700
1996-02-01	14956467200
1996-03-01	14953229900
1996-04-01	14951621500
1996-05-01	14946673000
1996-06-01	15579441600
1996-07-01	15497605200
1996-08-01	15476872000
1996-09-01	15489791800
1996-10-01	15655846800
1996-11-01	16913900100
1996-12-01	18251104700
1997-01-01	18957387200
1997-02-01	18962822900
1997-03-01	19011787200
1997-04-01	19505633500
1997-05-01	20161562600
1997-06-01	20336304500
1997-07-01	20233159000
1997-08-01	19276108200
1997-09-01	20275178100
1997-10-01	18328501100
1997-11-01	18074647000
1997-12-01	16586889400
1998-01-01	18147550200
1998-02-01	15478779200
1998-03-01	15769958100
1998-04-01	16882627200
1998-05-01	18168710100
1998-06-01	17949919200
1998-07-01	18608889400
1998-08-01	18971645700
1998-09-01	19649999200
1998-10-01	20813913700
1998-11-01	21795063500
1998-12-01	22713375200
1999-01-01	23751031600
1999-02-01	23591624800
1999-03-01	25160743800
1999-04-01	24924237000
1999-05-01	25396242700
1999-06-01	26318649500
1999-07-01	26039098900
1999-08-01	26181022000
1999-09-01	26032418600
1999-10-01	26264974600
1999-11-01	26254610800
1999-12-01	26445032700
2000-01-01	27060922000
2000-02-01	27584887100
2000-03-01	28460901800
2000-04-01	28084655800
2000-05-01	27768810800
2000-06-01	28686627800
2000-07-01	28339657700
2000-08-01	31105125000
2000-09-01	28859409400
2000-10-01	28117900500
2000-11-01	28005596200
2000-12-01	28501861300
2001-01-01	28743490400
2001-02-01	28507366800
2001-03-01	28088776500
2001-04-01	28139759700
2001-05-01	27988005900
2001-06-01	27967450200
2001-07-01	28208684300
2001-08-01	27699593000
2001-09-01	28151567700
2001-10-01	27818152200
2001-11-01	27258388000
2001-12-01	27246208700
2002-01-01	26988522900
2002-02-01	27106947900
2002-03-01	27169666700
2002-04-01	27286224500
2002-05-01	27785249800
2002-06-01	28329515700
2002-07-01	29409253500
2002-08-01	29154259000
2002-09-01	29018492600
2002-10-01	29018321200
2002-11-01	29014974500
2002-12-01	30970718100
2003-01-01	31048685600
2003-02-01	31134027400
2003-03-01	31558873600
2003-04-01	32605758200
2003-05-01	33054038400
2003-06-01	32989765400
2003-07-01	32578234700
2003-08-01	32349865200
2003-09-01	32839625700
2003-10-01	33597882700
2003-11-01	33847801400
2003-12-01	34962311700
2004-01-01	34671873400
2004-02-01	34736222200
2004-03-01	36073188100
2004-04-01	35840402200
2004-05-01	35231508000
2004-06-01	33609209900
2004-07-01	33590942100
2004-08-01	33547787200
2004-09-01	33502491700
2004-10-01	34020088400
2004-11-01	34511541200
2004-12-01	34952496600
2005-01-01	34830365100
2005-02-01	35203187500
2005-03-01	34714898800
2005-04-01	35095122600
2005-05-01	33320718700
2005-06-01	32601504400
2005-07-01	30972375500
2005-08-01	29851376100
2005-09-01	28860298200
2005-10-01	31191915300
2005-11-01	31708597600
2005-12-01	33140499000
2006-01-01	33342189700
2006-02-01	33817970100
2006-03-01	38330529700
2006-04-01	40844881800
2006-05-01	42256042500
2006-06-01	38488478600
2006-07-01	39374784000
2006-08-01	40430644600
2006-09-01	40824614700
2006-10-01	38353245500
2006-11-01	40082589500
2006-12-01	41103143900
2007-01-01	41751809900
2007-02-01	44102836700
2007-03-01	45669271600
2007-04-01	47718988800
2007-05-01	48581156900
2007-06-01	49405545100
2007-07-01	50327306000
2007-08-01	49863604800
2007-09-01	51157974500
2007-10-01	52316325400
2007-11-01	53032374600
2007-12-01	54976432300
2008-01-01	53842332400
2008-02-01	54873699500
2008-03-01	56827969200
2008-04-01	56704271800
2008-05-01	55391445600
2008-06-01	57295063200
2008-07-01	58457046800
2008-08-01	56388698200
2008-09-01	55019707100
2008-10-01	48805057500
2008-11-01	48270078300
2008-12-01	49596712000
2009-01-01	48775650000
2009-02-01	48365408600
2009-03-01	52662954700
2009-04-01	54457571000
2009-05-01	55688330400
2009-06-01	55380647700
2009-07-01	55230190900
2009-08-01	58114779600
2009-09-01	59977771300
2009-10-01	62091464400
2009-11-01	63105856400
2009-12-01	63563292000
2010-01-01	67004302900
2010-02-01	67143940200
2010-03-01	69222539500
2010-04-01	75849560100
2010-05-01	71753242900
2010-06-01	73431032000
2010-07-01	76059673000
2010-08-01	78418167900
2010-09-01	83489309000
2010-10-01	88673064800
2010-11-01	89563696900
2010-12-01	92908046500
2011-01-01	92231319000
2011-02-01	96333706100
2011-03-01	102374485300
2011-04-01	110212674500
2011-05-01	112719996100
2011-06-01	116130235800
2011-07-01	118879270100
2011-08-01	120545909400
2011-09-01	110673416000
2011-10-01	109854396600
2011-11-01	107280411800
2011-12-01	106538755600
2012-01-01	107939486400
2012-02-01	108041852100
2012-03-01	106610716500
2012-04-01	112510884900
2012-05-01	107911133600
2012-06-01	102857765200
2012-07-01	102763053200
2012-08-01	105096348300
2012-09-01	106038999500
2012-10-01	106288170300
2012-11-01	107237014500
2012-12-01	108837308000
2013-01-01	104693076400
2013-02-01	101274076900
2013-03-01	100899173300
2013-04-01	103640740900
2013-05-01	101632002700
2013-06-01	95001429000
2013-07-01	89347594400
2013-08-01	89462087400
2013-09-01	92312364900
2013-10-01	93595403000
2013-11-01	93834069500
2013-12-01	96363532800
2014-01-01	97468853600
2014-02-01	99408619900
2014-03-01	99340015100
2014-04-01	102303835700
2014-05-01	103897737600
2014-06-01	104374685500
2014-07-01	107285246400
2014-08-01	108023155200
2014-09-01	108094598000
2014-10-01	108950114800
2014-11-01	108144913000
2014-12-01	108835544000
2015-01-01	111066757200
2015-02-01	112481786300
2015-03-01	108570552400
2015-04-01	107850469400
2015-05-01	107798022100
2015-06-01	105083987000
2015-07-01	104823969500
2015-08-01	102489012800
2015-09-01	98876158400
2015-10-01	97836220600
2015-11-01	97583813800
2015-12-01	103268246000
2016-01-01	99334135000
2016-02-01	101451502800
2016-03-01	104443810100
2016-04-01	104565426000
2016-05-01	100532835400
2016-06-01	106477393600
2016-07-01	108046724700
2016-08-01	110225932600
2016-09-01	112357315000
2016-10-01	111845870700
2016-11-01	108490976600
2016-12-01	113493389500
2017-01-01	113904592000
2017-02-01	116709640400
2017-03-01	118665263000
2017-04-01	120083384600
2017-05-01	121739978100
2017-06-01	119948958300
2017-07-01	124484915100
2017-08-01	125386969500
2017-09-01	126079701500
2017-10-01	123253081600
2017-11-01	122638205000
2017-12-01	126857395400
2018-01-01	128498172000
2018-02-01	124612690400
2018-03-01	122543191300
2018-04-01	121437875900
2018-05-01	119547940200
2018-06-01	116681858900
2018-07-01	115225050000
2018-08-01	114902149300
2018-09-01	111841286300