Quarter	US Dollars, sum over component sub-periods
1999-01-01	-16471094.326943899
1999-04-01	295745016.980511960
1999-07-01	-442820261.335308970
1999-10-01	742311249.962109000
2000-01-01	74113625.271629410
2000-04-01	-413662775.136118000
2000-07-01	-300013885.372393000
2000-10-01	-299393423.595288040
2001-01-01	118145929.710386000
2001-04-01	750611800.474285000
2001-07-01	275882019.188243030
2001-10-01	1609176448.656849900
2002-01-01	-61968990.596285900
2002-04-01	395023316.072675000
2002-07-01	516289180.696755000
2002-10-01	749289186.681623900
2003-01-01	-1199250801.996870000
2003-04-01	471618373.547371000
2003-07-01	1163769341.747820000
2003-10-01	2395403180.782500000
2004-01-01	-1338405317.965770000
2004-04-01	496205274.383621000
2004-07-01	1519538162.969510000
2004-10-01	865320257.629779000
2005-01-01	-560266534.329513000
2005-04-01	1045011626.003529900
2005-07-01	261162896.033715000
2005-10-01	1578611164.215070000
2006-01-01	1177570969.970530000
2006-04-01	-3657167091.023210000
2006-07-01	1752708646.843440000
2006-10-01	4337046866.645020000
2007-01-01	2353623915.285600000
2007-04-01	1574952321.274530000
2007-07-01	1076829437.919030000
2007-10-01	2972706733.728610000
2008-01-01	1518765082.411190000
2008-04-01	2202910334.661370300
2008-07-01	4493427117.305040000
2008-10-01	-4299561479.409780500
2009-01-01	240363895.802970000
2009-04-01	1281936298.583260000
2009-07-01	-812150648.499868000
2009-10-01	352553075.016533000
2010-01-01	-211341802.769561020
2010-04-01	-265798278.895348970
2010-07-01	695996798.105546000
2010-10-01	854873090.534150000
2011-01-01	-1318631177.686960000
2011-04-01	-850345975.870209000
2011-07-01	-309727989.603245000
2011-10-01	-637531122.568482000
2012-01-01	-1017565434.236050000
2012-04-01	-1968957527.807700000
2012-07-01	1066886422.742060000
2012-10-01	-397118842.010535000
2013-01-01	-305559221.774109000
2013-04-01	-321206798.359560000
2013-07-01	-623135206.009182000
2013-10-01	145278333.436818000
2014-01-01	-461489567.417472000
2014-04-01	-1438883780.145200000
2014-07-01	162587125.827550020
2014-10-01	852799447.777431000
2015-01-01	904494372.017748000
2015-04-01	1064475104.993080100
2015-07-01	732523787.986093000
2015-10-01	3243320469.778590000
2016-01-01	2523194357.700940000
2016-04-01	3483630527.621120000
2016-07-01	1261525137.543010000
2016-10-01	-104231367.496991990
2017-01-01	1308465141.156990000
2017-04-01	1559635358.059219800
2017-07-01	599665014.374448000
2017-10-01	-1216482190.571280000
2018-01-01	2843797986.589190000
2018-04-01	-8227378.733352969