Quarter	US Dollars, sum over component sub-periods
2004-01-01	10762440000.000000
2004-04-01	11138040000.000000
2004-07-01	12165460000.000000
2004-10-01	12853970000.000000
2005-01-01	15277330000.000000
2005-04-01	16321760000.000000
2005-07-01	17310300000.000000
2005-10-01	15582930000.000000
2006-01-01	14278730000.000000
2006-04-01	16795360000.000000
2006-07-01	17707390000.000000
2006-10-01	17889380000.000000
2007-01-01	17139040000.000000
2007-04-01	19200630000.000000
2007-07-01	20585130000.000000
2007-10-01	20517580000.000000
2008-01-01	24591900000.000000
2008-04-01	29622370000.000000
2008-07-01	29920910000.000000
2008-10-01	23510120000.000000
2009-01-01	16300940000.000000
2009-04-01	18918960000.000000
2009-07-01	22152880000.000000
2009-10-01	23626920000.000000
2010-01-01	25872130000.000000
2010-04-01	28728180000.000000
2010-07-01	29894800000.000000
2010-10-01	34468070000.000000
2011-01-01	34629270000.000000
2011-04-01	40276950000.000000
2011-07-01	40230850000.000000
2011-10-01	42146640000.000000
2012-01-01	44101020000.000000
2012-04-01	46462750000.000000
2012-07-01	42122140000.000000
2012-10-01	45981050000.000000
2013-01-01	43343020000.000000
2013-04-01	45800260000.000000
2013-07-01	43739160000.000000
2013-10-01	43373560000.000000
2014-01-01	40587510000.000000
2014-04-01	44879730000.000000
2014-07-01	42045700000.000000
2014-10-01	40797290000.000000
2015-01-01	34764250000.000000
2015-04-01	35560640000.000000
2015-07-01	31944720000.000000
2015-10-01	32806300000.000004
2016-01-01	30444050000.000000
2016-04-01	32554230000.000000
2016-07-01	31006020000.000000
2016-10-01	35147500000.000000
2017-01-01	35128200000.000000
2017-04-01	34332339999.999996
2017-07-01	38133440000.000000
2017-10-01	42474600000.000000
2018-01-01	42050350000.000000
2018-04-01	43480730000.000000