Quarter	US Dollars, sum over component sub-periods
2008-01-01	-295287103526.305000
2008-04-01	-600810329911.567000
2008-07-01	-366658381024.367000
2008-10-01	-440250355297.101000
2009-01-01	-78257042520.137300
2009-04-01	-185551246295.190000
2009-07-01	-134340379596.275000
2009-10-01	-327167047873.191040
2010-01-01	-348070473332.379000
2010-04-01	-400473581142.618000
2010-07-01	-291526407663.149000
2010-10-01	-233199062110.744020
2011-01-01	-387535563965.441040
2011-04-01	-425641880245.298000
2011-07-01	-373306977173.733000
2011-10-01	-181774628919.474000
2012-01-01	-80788160126.220900
2012-04-01	-227911582283.063020
2012-07-01	86436372267.179400
2012-10-01	-443595283767.935000
2013-01-01	-254764978511.902000
2013-04-01	-149008237689.416020
2013-07-01	-244829565593.575000
2013-10-01	-306096374144.716000
2014-01-01	-140183500276.405000
2014-04-01	-123874097421.538000
2014-07-01	-72239532502.569300
2014-10-01	29535931188.948200
2015-01-01	-258556038601.651980
2015-04-01	-229224714410.813000
2015-07-01	297450414949.955000
2015-10-01	-4846112195.329720
2016-01-01	313677797098.772030
2016-04-01	138110815667.500000
2016-07-01	-96399331526.784300
2016-10-01	-99038922750.775390
2017-01-01	-23603083539.270000
2017-04-01	-60690079337.415700
2017-07-01	-40373216152.957800
2017-10-01	-32390891906.263298