Quarter	US Dollars, sum over component sub-periods
2006-01-01	28716159996.329998
2006-04-01	16551839999.332998
2006-07-01	35160693337.000000
2006-10-01	16336800003.630000
2007-01-01	18503733333.000000
2007-04-01	11043573333.366999
2007-07-01	27525600003.000000
2007-10-01	44940799996.700000
2008-01-01	46833330003.299995
2008-04-01	45074276536.300000
2008-07-01	53503346671.000000
2008-10-01	1520890000.700000
2009-01-01	-22499771203.000000
2009-04-01	-12447810003.300000
2009-07-01	4554287866.700001
2009-10-01	29690666663.700000
2010-01-01	15875119337.000000
2010-04-01	14721868466.699999
2010-07-01	7779110533.299999
2010-10-01	23739188337.000000
2011-01-01	36383249330.000000
2011-04-01	34700893337.000000
2011-07-01	36825414663.700005
2011-10-01	17071917332.699999
2012-01-01	35706300002.700005
2012-04-01	36641719997.000000
2012-07-01	28274746663.000000
2012-10-01	30716626663.000000
2013-01-01	34592266663.000000
2013-04-01	34419366670.000000
2013-07-01	34096359993.000000
2013-10-01	31710446670.000000
2014-01-01	30188046397.000000
2014-04-01	26524717067.000000
2014-07-01	14314429185.000000
2014-10-01	7181516410.000000
2015-01-01	-17024268154.000002
2015-04-01	-3922846932.000000
2015-07-01	-10547397678.000000
2015-10-01	-29900763477.600002
2016-01-01	-25873407072.100000
2016-04-01	-7254059032.000000
2016-07-01	-11289770666.250000
2016-10-01	-13616907312.000000
2017-01-01	2671060586.000000
2017-04-01	5694892844.000000
2017-07-01	10890978063.000000
2017-10-01	16877015283.000000
2018-01-01	4847389539.300000
2018-04-01	40041541310.000000