Quarter	Billions of US Dollars
1993-07-01	15.069
1993-10-01	17.611
1994-01-01	11.232
1994-04-01	9.580
1994-07-01	8.708
1994-10-01	10.395
1995-01-01	7.872
1995-04-01	14.039
1995-07-01	14.014
1995-10-01	13.255
1996-01-01	15.130
1996-04-01	21.805
1996-07-01	18.478
1996-10-01	22.052
1997-01-01	19.193
1997-04-01	22.855
1997-07-01	25.244
1997-10-01	12.388
1998-01-01	29.422
1998-04-01	28.114
1998-07-01	16.438
1998-10-01	23.000
1999-01-01	35.682
1999-04-01	42.146
1999-07-01	37.428
1999-10-01	31.253
2000-01-01	35.543
2000-04-01	35.046
2000-07-01	39.325
2000-10-01	27.312
2001-01-01	71.834
2001-04-01	74.778
2001-07-01	28.540
2001-10-01	59.227
2002-01-01	33.841
2002-04-01	46.457
2002-07-01	18.774
2002-10-01	27.815
2003-01-01	39.842
2003-04-01	52.597
2003-07-01	37.936
2003-10-01	41.593
2004-01-01	33.520
2004-04-01	37.744
2004-07-01	24.457
2004-10-01	42.353
2005-01-01	37.120
2005-04-01	32.550
2005-07-01	25.575
2005-10-01	45.197
2006-01-01	41.537
2006-04-01	52.614
2006-07-01	39.294
2006-10-01	63.655
2007-01-01	51.482
2007-04-01	70.807
2007-07-01	36.188
2007-10-01	52.330
2008-01-01	33.398
2008-04-01	85.196
2008-07-01	40.606
2008-10-01	32.592
2009-01-01	100.600
2009-04-01	130.703
2009-07-01	81.670
2009-10-01	78.093
2010-01-01	76.643
2010-04-01	52.287
2010-07-01	72.660
2010-10-01	75.565
2011-01-01	88.774
2011-04-01	103.385
2011-07-01	61.233
2011-10-01	74.124
2012-01-01	136.016
2012-04-01	76.853
2012-07-01	120.013
2012-10-01	114.838
2013-01-01	128.123
2013-04-01	128.304
2013-07-01	117.389
2013-10-01	138.476
2014-01-01	114.362
2014-04-01	169.393
2014-07-01	116.946
2014-10-01	113.740
2015-01-01	128.098
2015-04-01	100.693