Quarter	US Dollars, sum over component sub-periods
1998-01-01	9219350000.000000
1998-04-01	11825727000.000000
1998-07-01	1708434000.000000
1998-10-01	12287273000.000000
1999-01-01	-136519000.000000
1999-04-01	4743777000.000000
1999-07-01	15392763000.000000
1999-10-01	4395267500.000000
2000-01-01	14230193550.000000
2000-04-01	19080537330.000000
2000-07-01	16478553049.999998
2000-10-01	-5925793044.000000
2001-01-01	3973057582.000000
2001-04-01	-5948809161.000000
2001-07-01	6000240546.000000
2001-10-01	-24837247410.000000
2002-01-01	-8180070742.000000
2002-04-01	4477911693.000000
2002-07-01	-1015256751.000000
2002-10-01	7794155611.000000
2003-01-01	-12867292090.000000
2003-04-01	-5328346203.000000
2003-07-01	-2303113218.000000
2003-10-01	38503152260.000000
2004-01-01	34923374.800000
2004-04-01	28542251560.000000
2004-07-01	-6170128373.000000
2004-10-01	-16269157730.000000
2005-01-01	899335356.100000
2005-04-01	12777932730.000000
2005-07-01	6805570287.000000
2005-10-01	24176788940.000000
2006-01-01	-12663690850.000000
2006-04-01	-10881806420.000000
2006-07-01	7211000329.000000
2006-10-01	48274526660.000000
2007-01-01	-19173334020.000000
2007-04-01	1881836053.000000
2007-07-01	57024488500.000000
2007-10-01	115036203700.000000
2008-01-01	7843206701.000000
2008-04-01	52214656330.000000
2008-07-01	43973893920.000000
2008-10-01	-6454203848.000000
2009-01-01	6304147357.000000
2009-04-01	-43127907830.000000
2009-07-01	9802502503.000000
2009-10-01	8606848208.000000
2010-01-01	7360384627.000000
2010-04-01	50802835220.000000
2010-07-01	69378782710.000000
2010-10-01	-11279985710.000000
2011-01-01	21167170390.000000
2011-04-01	52825406450.000000
2011-07-01	48803471740.000000
2011-10-01	60808060060.000000
2012-01-01	48922280950.000000
2012-04-01	100418430700.000000
2012-07-01	31015458830.000000
2012-10-01	51324087230.000000
2013-01-01	20675069760.000000
2013-04-01	28001918610.000000
2013-07-01	43693575190.000000
2013-10-01	49591752190.000000
2014-01-01	46892082950.000000
2014-04-01	122597101200.000000
2014-07-01	78386214090.000000
2014-10-01	81034092190.000000
2015-01-01	11091381390.000000
2015-04-01	51883078510.000000
2015-07-01	7368336528.000000
2015-10-01	12122485580.000000
2016-01-01	27732540990.000000
2016-04-01	56682877150.000000
2016-07-01	138333883100.000000
2016-10-01	127156535600.000000
2017-01-01	19427767950.000000
2017-04-01	34137293090.000000
2017-07-01	32224934870.000000
2017-10-01	-8885776768.000000
2018-01-01	20779045530.000000
2018-04-01	59538079890.000000