Quarter	US Dollars, sum over component sub-periods
1986-01-01	128167171.604528000
1986-04-01	-75395948.304031000
1986-07-01	117581598.973528000
1986-10-01	24309394.027413500
1987-01-01	81711461.804451200
1987-04-01	18064031.391399400
1987-07-01	76036442.231493890
1987-10-01	84092401.835404600
1988-01-01	-64661904.935045200
1988-04-01	-97542782.043596700
1988-07-01	-40677487.823360800
1988-10-01	132495746.947800000
1989-01-01	36684662.528527900
1989-04-01	-8120869.025351160
1989-07-01	-110120022.198436000
1989-10-01	-4754953.068168400
1990-01-01	243558912.036944000
1990-04-01	-75329429.673615290
1990-07-01	-39098603.546549000
1990-10-01	274270638.350898000
1991-01-01	-245842279.376881000
1991-04-01	87055062.244187800
1991-07-01	-37068308.566007200
1991-10-01	79855817.539638400
1992-01-01	-30084066.501213300
1992-04-01	93919484.834384300
1992-07-01	62736698.152108700
1992-10-01	-52036971.565548494
1993-01-01	36913693.291577300
1993-04-01	-104319833.617629990
1993-07-01	136890760.466059000
1993-10-01	-23870122.267482600
1994-01-01	232206958.733210000
1994-04-01	-329291439.761907000
1994-07-01	-207846058.830849000
1994-10-01	-87097633.199849100
1995-01-01	216795147.308166000
1995-04-01	17554026.518377997
1995-07-01	-100725648.754373000
1995-10-01	20286138.889926300
1996-01-01	140886947.595709000
1996-04-01	345999035.618493000
1996-07-01	514536142.528120000
1996-10-01	232443545.230741000
1997-01-01	270789662.547785000
1997-04-01	55650785.534149595
1997-07-01	204672884.586268000
1997-10-01	360217441.741774000
1998-01-01	-204195175.771348000
1998-04-01	-295839861.504007000
1998-07-01	92542425.763037400
1998-10-01	56974566.376566800
1999-01-01	-168244235.997008000
1999-04-01	77119869.858539400
1999-07-01	-168186845.438066000
1999-10-01	-179319787.833220000
2000-01-01	96424653.339434400
2000-04-01	614812031.613488000
2000-07-01	-17715343.607826600
2000-10-01	-115870565.039708000
2001-01-01	-102052956.564914000
2001-04-01	446397818.829170000
2001-07-01	-51811872.538948200
2001-10-01	-54833381.388293400
2002-01-01	-102693142.550910000
2002-04-01	-390528920.676327000
2002-07-01	-268179993.960787000
2002-10-01	-48721152.925297600
2003-01-01	-120215378.722854990
2003-04-01	-182896511.108676020
2003-07-01	196401581.118138020
2003-10-01	122820121.526228000
2004-01-01	618196268.035144100
2004-04-01	477159298.503245000
2004-07-01	-260016935.843960020
2004-10-01	-89513241.858571110
2005-01-01	631324612.013121000
2005-04-01	196657154.885713000
2005-07-01	-276567471.816092000
2005-10-01	-1521206059.238200000
2006-01-01	301471315.812189000
2006-04-01	-2927094745.186590000
2006-07-01	-183684319.910162000
2006-10-01	-11498061.201078301
2007-01-01	-174008446.608441000
2007-04-01	-1030737918.908580100
2007-07-01	-12127626.868078700
2007-10-01	932015778.756437900
2008-01-01	603272933.266660000
2008-04-01	23651250.863112602
2008-07-01	7545574.085149740
2008-10-01	-45331952.910046294
2009-01-01	-11473796.066313300
2009-04-01	-286300806.222444950
2009-07-01	273985897.895925000
2009-10-01	-169845475.142956000
2010-01-01	485390770.650575000
2010-04-01	-187920271.943992970
2010-07-01	-825871581.171499000
2010-10-01	-679034007.528871000
2011-01-01	-317172937.587401030
2011-04-01	32615409.957583502
2011-07-01	-28964479.135170500
2011-10-01	-1200663996.770730000
2012-01-01	-98974526.964148700
2012-04-01	-479204322.200393000
2012-07-01	184890654.821850000
2012-10-01	-1125787457.526940000
2013-01-01	-337833581.544828950
2013-04-01	-16890846.342179403
2013-07-01	-51178709.697242900
2013-10-01	-1842453095.066090000
2014-01-01	-170498070.849520000
2014-04-01	181792942.735005000
2014-07-01	-100114183.443178010
2014-10-01	-2487557111.724840000
2015-01-01	121187127.062683000
2015-04-01	-1092353706.442150000
2015-07-01	-255515220.050861000
2015-10-01	-1472606178.987900000
2016-01-01	210362101.555348000
2016-04-01	-629615196.767244000
2016-07-01	-287480009.472992000
2016-10-01	-1232051989.643770000
2017-01-01	-64451026.125271894
2017-04-01	-905679164.895154000
2017-07-01	-200225089.643259000
2017-10-01	-650238554.366712900
2018-01-01	-489784732.123254000
2018-04-01	-900265597.863234000