Quarter	Millions of US Dollars
2000-10-01	309
2001-10-01	330
2002-10-01	464
2003-10-01	1121
2004-10-01	2205
2005-10-01	1724
2006-10-01	1540
2007-10-01	1671
2008-01-01	1760
2008-04-01	1683
2008-07-01	1484
2008-10-01	1374
2009-01-01	1234
2009-04-01	1291
2009-07-01	1321
2009-10-01	237
2010-01-01	138
2010-04-01	76
2010-07-01	78
2010-10-01	86
2011-01-01	74
2011-04-01	65
2011-07-01	54
2011-10-01	47
2012-01-01	39
2012-04-01	34
2012-07-01	32
2012-10-01	78
2013-01-01	68
2013-04-01	71
2013-07-01	78
2013-10-01	98
2014-01-01	97
2014-04-01	92
2014-07-01	86
2014-10-01	84
2015-01-01	67
2015-04-01	69
2015-07-01	71
2015-10-01	88
2016-01-01	88
2016-04-01	89
2016-07-01	85
2016-10-01	80
2017-01-01	78
2017-04-01	83
2017-07-01	80
2017-10-01	172
2018-01-01	181