Quarter	US Dollars, monthly level
1991-01-01	-125264827.629629020
1991-04-01	350494765.726690050
1991-07-01	339016512.513803000
1991-10-01	251295931.302561000
1992-01-01	244791544.926766000
1992-04-01	57447819.865244800
1992-07-01	-207073897.393526000
1992-10-01	-1716201447.717079900
1993-01-01	417615697.081045030
1993-04-01	31735493.298183800
1993-07-01	-137223819.088833000
1993-10-01	-457369912.081572000
1994-01-01	7852086.557114091
1994-04-01	-320512615.752224000
1994-07-01	-550302287.621426900
1994-10-01	-535811191.752244000
1995-01-01	-668445194.424319000
1995-04-01	-981695195.781896000
1995-07-01	-803526583.773241000
1995-10-01	-1306137097.060860000
1996-01-01	-1188530092.714150000
1996-04-01	-1486996418.017239800
1996-07-01	-1543516802.004220000
1996-10-01	-1399462223.343440000
1997-01-01	-1528875801.319830000
1997-04-01	-1396097928.383100000
1997-07-01	-964807595.249653900
1997-10-01	-876541244.440360000
1998-01-01	-590392626.896222000
1998-04-01	-639033018.545038000
1998-07-01	-576714523.086937100
1998-10-01	-655583266.889296000
1999-01-01	-377208304.972312000
1999-04-01	-210082798.240489000
1999-07-01	-243725791.255191000
1999-10-01	-1029020008.166600100
2000-01-01	-475261964.869974000
2000-04-01	-621651638.139165000
2000-07-01	-812514740.438124000
2000-10-01	-1182896584.357660000
2001-01-01	-711432242.910779000
2001-04-01	-624621489.088658000
2001-07-01	-734139404.667650000
2001-10-01	-1028821353.908290000
2002-01-01	-255967852.226492000
2002-04-01	-401354234.124187050
2002-07-01	-577072270.523634000
2002-10-01	-988530037.310462000
2003-01-01	-152392419.796971000
2003-04-01	-478952500.398918030
2003-07-01	-639348237.115006000
2003-10-01	-1248826963.757650000
2004-01-01	64128251.506690510
2004-04-01	-331578137.746942000
2004-07-01	-318235345.812462000
2004-10-01	-459951397.811246000
2005-01-01	1035311920.219350000
2005-04-01	567583827.105060000
2005-07-01	5258048.193105190
2005-10-01	48854962.904787300
2006-01-01	1005980129.760760100
2006-04-01	346936790.151421000
2006-07-01	129652405.122175990
2006-10-01	235719693.967484000
2007-01-01	1774080443.315840000
2007-04-01	925168450.176739000
2007-07-01	625091817.301739000
2007-10-01	966795810.347568000
2008-01-01	1983684005.336670000
2008-04-01	1900883606.769270000
2008-07-01	1156251849.374070200
2008-10-01	-797460812.323228000
2009-01-01	1601321119.294150000
2009-04-01	2263775452.913970000
2009-07-01	2109326777.128450000
2009-10-01	1916728186.908400000
2010-01-01	2652672203.682520000
2010-04-01	1669561166.171200000
2010-07-01	750717937.060654000
2010-10-01	1294604441.767300000
2011-01-01	3095122724.643910000
2011-04-01	2526908969.197530000
2011-07-01	2067963893.745570200
2011-10-01	3076681037.931619600
2012-01-01	4948487571.196939000
2012-04-01	3543132853.036360300
2012-07-01	3477187931.235050000
2012-10-01	3712134798.686000000
2013-01-01	5005430889.026660000
2013-04-01	4794780032.377970000
2013-07-01	4223619347.117290000
2013-10-01	3935426945.166220000
2014-01-01	6181253370.677160000
2014-04-01	5392547820.149240000
2014-07-01	4921022293.440599000
2014-10-01	4284545572.427200300
2015-01-01	4382409723.732870000
2015-04-01	4351712135.378580000
2015-07-01	3850345194.449350000
2015-10-01	3931702686.546430000
2016-01-01	5741269653.850070000
2016-04-01	5813337552.008350000
2016-07-01	4163789407.723370000
2016-10-01	3928190107.372950000
2017-01-01	5423300676.740140000
2017-04-01	5015953657.377300000
2017-07-01	3994299823.836510000
2017-10-01	4387600531.657881000
2018-01-01	5960535675.121620000
2018-04-01	5014456563.154210000
2018-07-01	2983912525.228580000