Quarter	US Dollars, sum over component sub-periods
2005-01-01	1876191553.96619990
2005-04-01	5374713581.29414000
2005-07-01	-3545299302.52105000
2005-10-01	613581192.96797600
2006-01-01	815202189.32773510
2006-04-01	3951806952.40120000
2006-07-01	1377181372.54901980
2006-10-01	-606592926.14567900
2007-01-01	4221285852.64307000
2007-04-01	-1180755337.26570000
2007-07-01	893679703.37670210
2007-10-01	-2904076187.11975000
2008-01-01	-2603547503.48968000
2008-04-01	-3847378589.54500000
2008-07-01	390657435.46644500
2008-10-01	7525350729.63828100
2009-01-01	-1654282656.99284000
2009-04-01	-2110267833.09372020
2009-07-01	-5448688842.52220000
2009-10-01	-1728454204.81427000
2010-01-01	6649305536.62881000
2010-04-01	-3451910309.88900000
2010-07-01	853764166.25016310
2010-10-01	-281462391.50597596
2011-01-01	792404629.87925600
2011-04-01	458720412.68174700
2011-07-01	-1815297879.04844020
2011-10-01	-2862540636.92326000
2012-01-01	4152141671.62074040
2012-04-01	5331275394.42593000
2012-07-01	-4800284682.18656000
2012-10-01	-3986688516.72209000
2013-01-01	8021242491.77713000
2013-04-01	-3139182213.16066000
2013-07-01	473555971.09856397
2013-10-01	-2565063389.89183000
2014-01-01	4105624113.29483000
2014-04-01	695176252.60096100
2014-07-01	4148941934.91892000
2014-10-01	-2485556064.98983000
2015-01-01	2269072019.92250000
2015-04-01	-699238667.48819790
2015-07-01	-3084449506.44072000
2015-10-01	-4077758866.17230000
2016-01-01	5231920085.99740000
2016-04-01	-651499733.58160600
2016-07-01	337059617.23469300
2016-10-01	-1555701340.42742010
2017-01-01	-774827478.40788790
2017-04-01	1929371887.68951000
2017-07-01	-801543840.12834310
2017-10-01	-854040875.52398000
2018-01-01	791026309.75239400
2018-04-01	423079546.94601196