Quarter	US Dollars, sum over component sub-periods
2008-01-01	-281662999.85921200
2008-04-01	-270236049.92677100
2008-07-01	-299901909.55329800
2008-10-01	-224586502.15897298
2009-01-01	-130105918.04509900
2009-04-01	-136182287.75435302
2009-07-01	-125877288.86644101
2009-10-01	-146191550.66625500
2010-01-01	-280904984.53144604
2010-04-01	-271926905.27334900
2010-07-01	-273976894.45858600
2010-10-01	-272821402.38559300
2011-01-01	-173637637.40604400
2011-04-01	-184230038.31895098
2011-07-01	-177907486.62580502
2011-10-01	-160331990.86616802
2012-01-01	-203268686.89544800
2012-04-01	-197482375.38873300
2012-07-01	-207723751.18488600
2012-10-01	3145875882.86612000
2013-01-01	-160978352.95645398
2013-04-01	-158027192.84398000
2013-07-01	-158952761.35400900
2013-10-01	55805661.48977650
2014-01-01	-94563976.55223490
2014-04-01	-100101815.39289300
2014-07-01	-98014694.61305280
2014-10-01	-89902289.89167100
2015-01-01	-9005836.49842434
2015-04-01	-8848381.89884408
2015-07-01	-8893579.40560676
2015-10-01	-8754188.06513226
2016-01-01	-128949674.69173300
2016-04-01	-88078958.46656050
2016-07-01	-123861807.39935800
2016-10-01	-115293484.58639400
2017-01-01	-68195654.34311551
2017-04-01	-19795985.10166800
2017-07-01	-73992907.74651930
2017-10-01	-70651053.62206821
2018-01-01	-117972251.28928901
2018-04-01	-47648295.59884550