Quarter	US Dollars, monthly level
1999-01-01	-293660640.03617900
1999-04-01	-437815040.05393900
1999-07-01	-353653040.04357000
1999-10-01	-437987680.05395997
2000-01-01	-280712640.03458400
2000-04-01	-416407680.05130100
2000-07-01	-347265360.04278300
2000-10-01	-531990160.06554100
2001-01-01	-333799440.04112400
2001-04-01	-384641920.04738800
2001-07-01	-361508160.04453800
2001-10-01	-637386880.07852590
2002-01-01	-448051153.54565600
2002-04-01	-565557982.69043800
2002-07-01	-487191430.88169500
2002-10-01	-792627145.73104600
2003-01-01	-457842867.07708200
2003-04-01	-719989396.53627300
2003-07-01	-600130059.43983300
2003-10-01	-916763037.33922100
2004-01-01	-641271213.15979990
2004-04-01	-851208600.45647400
2004-07-01	-764773128.32280200
2004-10-01	-821643746.19931600
2005-01-01	-613188071.86480200
2005-04-01	-1060436785.28826990
2005-07-01	-952892232.74245700
2005-10-01	-1094203888.18834000
2006-01-01	-970239405.83981910
2006-04-01	-1169081975.58738000
2006-07-01	-1441845394.72769000
2006-10-01	-1672439259.38342000
2007-01-01	-1541563546.96055000
2007-04-01	-1922564971.70739000
2007-07-01	-1751548967.96585000
2007-10-01	-2063569395.54197000
2008-01-01	-2349907357.06777000
2008-04-01	-2116269242.39814020
2008-07-01	-1756222649.16998000
2008-10-01	-1286589828.88721000
2009-01-01	-398530708.64258900
2009-04-01	-509146758.82392900
2009-07-01	-547744336.12678400
2009-10-01	-388936884.58927100
2010-01-01	-612576422.19222400
2010-04-01	-560988626.75500110
2010-07-01	-775249621.96376300
2010-10-01	-703510945.53120400
2011-01-01	-940456849.09864100
2011-04-01	-1043774878.66873000
2011-07-01	-900102404.63358100
2011-10-01	-843688906.56429200
2012-01-01	-995341958.70617100
2012-04-01	-494529732.82864800
2012-07-01	-623974393.40110290
2012-10-01	-244463998.20199000
2013-01-01	-330883614.03593300
2013-04-01	-451455057.86375100
2013-07-01	-762957775.35497800
2013-10-01	-667397075.42546000
2014-01-01	-566305947.11068200
2014-04-01	-610697764.10235100
2014-07-01	-426647213.06317097
2014-10-01	-434971508.69709000
2015-01-01	-715513709.79981400
2015-04-01	-1006392836.21978010
2015-07-01	-631221798.31294000
2015-10-01	-418559616.86413600
2016-01-01	-464549469.08175796
2016-04-01	-888016576.12952800
2016-07-01	-500357067.00785600
2016-10-01	-469686261.03933805
2017-01-01	-598736533.99057200
2017-04-01	-654147329.91511700
2017-07-01	-682261589.04687390
2017-10-01	-433561965.72742500
2018-01-01	-892165150.37524400
2018-04-01	-933668352.25937810