Quarter	Millions of US Dollars
2009-04-01	-222.740999999999990
2009-07-01	1016.145000000000000
2009-10-01	993.822000000000000
2010-01-01	1477.182000000000000
2010-04-01	1276.401000000000000
2010-07-01	2340.624000000000000
2010-10-01	451.833000000000000
2011-01-01	-1189.061000000000100
2011-04-01	2126.691000000000300
2011-07-01	503.649000000000000
2011-10-01	2109.377999999999700
2012-01-01	3457.975999999999700
2012-04-01	831.383999999999900
2012-07-01	3230.162000000000300
2012-10-01	6913.516000000000000
2013-01-01	-1523.985000000000000
2013-04-01	2259.551000000000000
2013-07-01	4039.620000000000000
2013-10-01	1256.803999999999900
2014-01-01	-1588.214000000000000
2014-04-01	1590.686000000000100
2014-07-01	612.509000000000000
2014-10-01	1366.253000000000000
2015-01-01	763.296000000000000
2015-04-01	-341.097000000000000
2015-07-01	938.452000000000000
2015-10-01	26.023000000000003
2016-01-01	-938.842000000000000
2016-04-01	-271.339000000000000
2016-07-01	1569.483000000000000
2016-10-01	597.837000000000000
2017-01-01	663.261000000000100
2017-04-01	4333.248000000000000
2017-07-01	41.715000000000000
2017-10-01	5070.032000000000000
2018-01-01	469.229000000000040