Quarter	US Dollars, sum over component sub-periods
1995-01-01	-80584790.1712977000
1995-04-01	-67248867.5103909000
1995-07-01	-56003278.2406775060
1995-10-01	-70032498.7412460000
1996-01-01	37323380.4318848000
1996-04-01	2573340.1955738603
1996-07-01	11758557.6169323000
1996-10-01	-30676153.5511908000
1997-01-01	62527036.0611900000
1997-04-01	-51344464.3060891000
1997-07-01	-42216930.0714440000
1997-10-01	80201990.1975345000
1998-01-01	-44538478.0893638000
1998-04-01	-61636363.6363635960
1998-07-01	-39051810.2141193000
1998-10-01	-50590219.2242833000
1999-01-01	-72962791.6881936000
1999-04-01	-27475505.4092916000
1999-07-01	-72358081.0121268000
1999-10-01	-36325957.8429228960
2000-01-01	-50350483.2997217000
2000-04-01	-93388162.4378538000
2000-07-01	-76813092.9839570100
2000-10-01	-179114444.7040810000
2001-01-01	-59049572.9907162000
2001-04-01	-63787991.0367120000
2001-07-01	-139063963.5086290000
2001-10-01	-193463917.3310700000
2002-01-01	-68377088.2391340000
2002-04-01	-50578800.2730070950
2002-07-01	-210509291.9233380000
2002-10-01	-111051835.6537860000
2003-01-01	13955806.6012038010
2003-04-01	10223023.8857519000
2003-07-01	-39397995.7753043000
2003-10-01	-126129640.1262549900
2004-01-01	-25002996.6445978020
2004-04-01	-38567878.8823549000
2004-07-01	-95368826.8208241900
2004-10-01	-49225287.4584396000
2005-01-01	-26209177.3552193000
2005-04-01	-18877664.3097909000
2005-07-01	42682531.3170786950
2005-10-01	13082953.3032803000
2006-01-01	-345231624.9314430000
2006-04-01	-61587367.2234520000
2006-07-01	-66276336.4894152000
2006-10-01	-668170273.4994680000
2007-01-01	-114067031.7679570000
2007-04-01	-60663541.4476076000
2007-07-01	280474606.2642460000
2007-10-01	-65208200.0616489950
2008-01-01	-137835085.0374860200
2008-04-01	-54672033.2221790000
2008-07-01	-56981362.8151266050
2008-10-01	3940114.0729644400
2009-01-01	-96278379.3533735900
2009-04-01	-155247808.0399620000
2009-07-01	-198828899.4594920000
2009-10-01	298289830.6523580000
2010-01-01	658673756.8323569000
2010-04-01	-116903155.5380750000
2010-07-01	-171881730.9575090000
2010-10-01	-100441710.3310139900
2011-01-01	-88869656.9401011900
2011-04-01	-115143773.9493440000
2011-07-01	-134136597.0591390100
2011-10-01	-121259488.8903790000
2012-01-01	-177040469.2315190000
2012-04-01	-126952955.6070420000
2012-07-01	-127637485.6678209900
2012-10-01	-145354001.1885340000
2013-01-01	-220355614.2928500000
2013-04-01	-131906995.6796850000
2013-07-01	-140408272.5293739700
2013-10-01	-156528074.9103490000
2014-01-01	-109639393.1040400000
2014-04-01	-108329361.8635409900
2014-07-01	-62252576.3082903000
2014-10-01	-176058651.0378560000
2015-01-01	162105056.9716380000
2015-04-01	6636286.4241330605
2015-07-01	-1742029866.0732200000
2015-10-01	-414729659.5856410000
2016-01-01	-89272851.7096615900
2016-04-01	-761092538.5443820000
2016-07-01	745402588.6736130000
2016-10-01	-307090122.4964700000
2017-01-01	-42622283.9644472000
2017-04-01	-65986617.0055599100
2017-07-01	-73992907.7465193000
2017-10-01	-105976580.4331020000
2018-01-01	-170813988.8459490200
2018-04-01	-65516406.4484126000