Quarter	US Dollars, sum over component sub-periods
2004-01-01	153929457.39134700
2004-04-01	172708358.83000898
2004-07-01	696655924.32930210
2004-10-01	275395034.76707804
2005-01-01	580457345.91170190
2005-04-01	114952173.10958399
2005-07-01	161754498.73545500
2005-10-01	284676280.39986897
2006-01-01	449447745.68494500
2006-04-01	360318642.37822800
2006-07-01	675818968.66980900
2006-10-01	792829817.04322000
2007-01-01	636216025.01941000
2007-04-01	788307496.13396910
2007-07-01	1375500505.43094000
2007-10-01	2453593334.56296000
2008-01-01	2246076829.14234000
2008-04-01	2875316117.24192000
2008-07-01	713785761.98330000
2008-10-01	611219151.19989400
2009-01-01	2506203430.53863000
2009-04-01	1438572982.66885000
2009-07-01	701129717.95803300
2009-10-01	2614452337.35966970
2010-01-01	1794762636.86088010
2010-04-01	1390193677.10287000
2010-07-01	1724838822.06034000
2010-10-01	4095048143.18806000
2011-01-01	1219061764.12109000
2011-04-01	2120403359.15589000
2011-07-01	2156828311.77669000
2011-10-01	4796190872.45051000
2012-01-01	1757278039.19541000
2012-04-01	2963205595.35412000
2012-07-01	3187841001.23861000
2012-10-01	3514744886.64282000
2013-01-01	1148997940.80658980
2013-04-01	4342295794.65203000
2013-07-01	3121916680.75568000
2013-10-01	3802510988.95406000
2014-01-01	2130611078.93682000
2014-04-01	5456379218.60906000
2014-07-01	2677140192.81848000
2014-10-01	3867451409.90953000
2015-01-01	4108682881.13544000
2015-04-01	1376230197.76162000
2015-07-01	5191787874.54956000
2015-10-01	1204359859.47307000
2016-01-01	2762344748.13642020
2016-04-01	163018675.98226800
2016-07-01	113877206.13120101
2016-10-01	2496203415.00578980
2017-01-01	695969872.66892910
2017-04-01	1119550503.42432000
2017-07-01	1279254291.70304010
2017-10-01	4068738886.11249000
2018-01-01	1725412147.04078980
2018-04-01	2074241848.16041000