Quarter	US Dollars, sum over component sub-periods
1999-01-01	-382998281.71603100
1999-04-01	237860568.99695200
1999-07-01	-1047364331.05820990
1999-10-01	-274784705.35045700
2000-01-01	-820318996.67420800
2000-04-01	-704603422.25854700
2000-07-01	-813912011.75070000
2000-10-01	-831545012.92872390
2001-01-01	281317042.28334700
2001-04-01	254920936.43798298
2001-07-01	501421022.48691000
2001-10-01	1251998510.54394000
2002-01-01	846817524.56770500
2002-04-01	145995157.71329600
2002-07-01	667380728.95250800
2002-10-01	456602150.11817700
2003-01-01	-3085513812.97391000
2003-04-01	360785851.58176500
2003-07-01	40532413.02777970
2003-10-01	-484262461.67540800
2004-01-01	-364504958.39205796
2004-04-01	-2313270050.09474000
2004-07-01	996913552.95157910
2004-10-01	-941758471.97296800
2005-01-01	-1049675610.20661000
2005-04-01	-2212249999.79069000
2005-07-01	-938471596.89469300
2005-10-01	-1022866722.16594000
2006-01-01	742535993.76308200
2006-04-01	-6940181907.50016000
2006-07-01	16387719.79237920
2006-10-01	2074267105.74366000
2007-01-01	806592610.60316200
2007-04-01	-4722875516.73641000
2007-07-01	-2649632496.22410000
2007-10-01	-1132328345.50573020
2008-01-01	-4792535525.80291100
2008-04-01	-1425226186.36095000
2008-07-01	-2003180536.91944000
2008-10-01	-17566258102.25760300
2009-01-01	-8573850954.73237000
2009-04-01	-66449570.26075110
2009-07-01	-3419541099.35040000
2009-10-01	-261989783.17668800
2010-01-01	-278789668.57963500
2010-04-01	-1219488149.50031020
2010-07-01	1698763435.03238990
2010-10-01	1663818157.28565000
2011-01-01	2085110038.58224000
2011-04-01	897544142.71797400
2011-07-01	-156575057.22137502
2011-10-01	2338553031.72195000
2012-01-01	3880207013.16053000
2012-04-01	-105481209.04049501
2012-07-01	6761585947.94178000
2012-10-01	4807978003.29053000
2013-01-01	1874066982.19341000
2013-04-01	3477041857.09522000
2013-07-01	3755011941.39829000
2013-10-01	2631053557.94179000
2014-01-01	-398155252.22816000
2014-04-01	-1610894146.35642000
2014-07-01	316806417.61032600
2014-10-01	5261469611.99060100
2015-01-01	-1437969350.40293000
2015-04-01	1490152139.67234000
2015-07-01	4262002250.59302000
2015-10-01	5740775843.03799000
2016-01-01	635781688.69146700
2016-04-01	4568460256.98963900
2016-07-01	3560846974.17796000
2016-10-01	-157046995.55092698
2017-01-01	-345598764.46491700
2017-04-01	-94495276.19805810
2017-07-01	2053902207.69063000
2017-10-01	358060834.07288796
2018-01-01	2799093740.60549000
2018-04-01	-1966937769.08387020