Quarter	US Dollars, sum over component sub-periods
2005-01-01	17107332786.420200
2005-04-01	18502321352.382300
2005-07-01	17850379208.895600
2005-10-01	18944486893.240600
2006-01-01	19494995915.853000
2006-04-01	21201867963.735302
2006-07-01	21113631987.442400
2006-10-01	23296174374.242000
2007-01-01	23686748676.126900
2007-04-01	23642304756.683598
2007-07-01	24140219830.679900
2007-10-01	27456982678.942700
2008-01-01	28670801150.835598
2008-04-01	31267850371.838997
2008-07-01	29456080309.722700
2008-10-01	24016135072.776897
2009-01-01	19762289704.793100
2009-04-01	19189701483.011800
2009-07-01	20531425363.875698
2009-10-01	22262376956.219902
2010-01-01	20542071508.184000
2010-04-01	20661536211.141903
2010-07-01	20915923084.607998
2010-10-01	23120713802.137600
2011-01-01	23930554946.108000
2011-04-01	26086151539.456100
2011-07-01	26044448102.260002
2011-10-01	25243860838.706802
2012-01-01	24646462707.511497
2012-04-01	24210959890.291298
2012-07-01	23261392933.568700
2012-10-01	25079691752.629400
2013-01-01	24887506791.258600
2013-04-01	24722387843.593502
2013-07-01	25704442150.306297
2013-10-01	26304101007.541400
2014-01-01	26303841147.608400
2014-04-01	26639294504.146202
2014-07-01	25876079648.837800
2014-10-01	24617241522.525100
2015-01-01	22251529630.213300
2015-04-01	21725582000.843197
2015-07-01	21662792142.032800
2015-10-01	21952559376.883900
2016-01-01	20626929482.924100
2016-04-01	21641970281.518100
2016-07-01	21760224328.154503
2016-10-01	22791035224.328000
2017-01-01	22205729242.416900
2017-04-01	22675595284.851400
2017-07-01	24445522896.672800
2017-10-01	25846799444.381300
2018-01-01	26868197258.811300
2018-04-01	27800525637.427100
2018-07-01	24789979790.785100