Quarter	US Dollars, sum over component sub-periods
1981-01-01	-404676678.7381420000
1981-04-01	-529731467.7784370000
1981-07-01	-29705847.4152627000
1981-10-01	1351323518.9967000000
1982-01-01	-1333288346.9359200000
1982-04-01	-21697523.7335851000
1982-07-01	891776965.3752900000
1982-10-01	-32489801.1072488000
1983-01-01	493803102.4202069600
1983-04-01	146219336.0651280000
1983-07-01	213328809.6158760000
1983-10-01	-362528868.5418060000
1984-01-01	-598993056.9210900000
1984-04-01	-690387348.7404760000
1984-07-01	573108132.2524350000
1984-10-01	-139514636.1289529800
1985-01-01	596975236.0183090000
1985-04-01	-743192025.6763589000
1985-07-01	82312004.2311331000
1985-10-01	724851.7800836030
1986-01-01	-60593156.7652045900
1986-04-01	-10111469.0029359000
1986-07-01	-278598825.2248470000
1986-10-01	985614292.5340400000
1987-01-01	3611830649.3087897000
1987-04-01	-1376906742.8840000000
1987-07-01	1205472542.8997600000
1987-10-01	445330452.0278170000
1988-01-01	4410535786.0917900000
1988-04-01	3827072959.9802100000
1988-07-01	-1463873751.2451700000
1988-10-01	1375243950.8216300000
1989-01-01	206375230.8867540000
1989-04-01	-122360734.4187720000
1989-07-01	384793999.8336220400
1989-10-01	224174147.5504709800
1990-01-01	-2117362434.1296700000
1990-04-01	-93987012.3459207000
1990-07-01	3221827442.6058400000
1990-10-01	125707718.2365020000
1991-01-01	-497405823.8957180400
1991-04-01	-447246851.6924740000
1991-07-01	1329615731.5183900000
1991-10-01	-2231808096.6149700000
1992-01-01	-1243175036.7950700000
1992-04-01	-339055589.6479230000
1992-07-01	-2710333264.8683400000
1992-10-01	-495222482.4868700000
1993-01-01	1131711706.3222399000
1993-04-01	-1103641151.8938400000
1993-07-01	-977694847.4513190000
1993-10-01	1853457046.2543900000
1994-01-01	-1651566545.8919700000
1994-04-01	614947365.8745560000
1994-07-01	3921178851.2539600000
1994-10-01	-3288576980.6887403000
1995-01-01	2075819005.7382798000
1995-04-01	186674680.1932550000
1995-07-01	1347680593.3507800000
1995-10-01	-903221984.6792470000
1996-01-01	1836547445.6410400000
1996-04-01	1779098392.7123600000
1996-07-01	777223437.3852000000
1996-10-01	1103111080.7275800000
1997-01-01	1189531036.4747800000
1997-04-01	-406073085.4327250000
1997-07-01	-1098819618.7632100000
1997-10-01	-2072995972.7510900000
1998-01-01	4488040890.2381990000
1998-04-01	-2431151351.2010903000
1998-07-01	-811068612.2095860000
1998-10-01	3745240664.5893900000
1999-01-01	1975930541.5403001000
1999-04-01	964009102.3164600000
1999-07-01	88179179.4956868900
1999-10-01	2907623989.9981203000
2000-01-01	2759857206.2174296000
2000-04-01	-803417019.6963061000
2000-07-01	908339173.8618220000
2000-10-01	859935186.6032590000
2001-01-01	1629475932.5282100000
2001-04-01	-87592706.9867263000
2001-07-01	-84142996.5386953000
2001-10-01	714238808.4956679000
2002-01-01	436678464.1781810000
2002-04-01	933086645.6734210000
2002-07-01	-1206091365.9535900000
2002-10-01	-356183785.5229030000
2003-01-01	-1796500592.5663800000
2003-04-01	-163883906.2612850000
2003-07-01	-2899710.6511719404
2003-10-01	-1329423452.7565700000
2004-01-01	179120979.9363109800
2004-04-01	-178826520.5094030000
2004-07-01	395396995.4829490000
2004-10-01	-3225924046.3754900000
2005-01-01	2803371664.3137197000
2005-04-01	-470400869.4451729700
2005-07-01	-907432221.7656790000
2005-10-01	-92009740.4909599000
2006-01-01	3150402592.3965700000
2006-04-01	-809880809.0441020000
2006-07-01	-46377126.6479788940
2006-10-01	-1458936162.3200800000
2007-01-01	4030426349.5610800000
2007-04-01	333138650.7956570000
2007-07-01	137757459.4508270000
2007-10-01	-598947828.3291320000
2008-01-01	-245788525.6426090000
2008-04-01	1796894048.8216002000
2008-07-01	747267030.5781109000
2008-10-01	-526312643.2439099600
2009-01-01	865553763.1661560000
2009-04-01	468707052.2500590000
2009-07-01	11915971854.4105000000
2009-10-01	-2919018534.9425000000
2010-01-01	3523355425.4094700000
2010-04-01	-52532869.8933394000
2010-07-01	947999300.0466600000
2010-10-01	-601064563.7897531000
2011-01-01	2600095571.0622900000
2011-04-01	744953534.7993261000
2011-07-01	1209479922.1894600000
2011-10-01	3511016708.8279000000
2012-01-01	2962249339.8986697000
2012-04-01	-2439252278.9832100000
2012-07-01	1078489925.7935400000
2012-10-01	125129783.2234370000
2013-01-01	2782994035.5758000000
2013-04-01	-433807663.8973290300
2013-07-01	1675242765.1733900000
2013-10-01	729713421.7802360000
2014-01-01	4256389236.3551500000
2014-04-01	-793477821.3190060000
2014-07-01	-107449109.9116009900
2014-10-01	1911184403.7007900000
2015-01-01	5336697512.9885610000
2015-04-01	-1568499837.2925498000
2015-07-01	2035175517.7999100000
2015-10-01	2681390557.1069800000
2016-01-01	1130531753.0484898000
2016-04-01	1980577520.6171598000
2016-07-01	1122332079.7447800000
2016-10-01	1432202307.1041398000
2017-01-01	-609841607.1351930000
2017-04-01	581554607.8765620000
2017-07-01	-1268731802.9135400000
2017-10-01	2099564840.3537698000
2018-01-01	-4032791314.3440200000
2018-04-01	137885361.1221790000