Quarter	Millions of US Dollars
1992-01-01	2051
2002-04-01	0
2002-10-01	-601
2006-10-01	-1450
2011-01-01	500
2013-07-01	1000
2013-10-01	551
2017-04-01	1562
2017-07-01	45
2017-10-01	3687
2018-01-01	2106
2018-04-01	1180