Quarter	Billions of US Dollars
1993-07-01	8.101
1993-10-01	9.219
1994-01-01	10.368
1994-04-01	10.980
1994-07-01	16.237
1994-10-01	22.006
1995-01-01	23.007
1995-04-01	23.010
1995-07-01	23.528
1995-10-01	23.455
1996-01-01	23.595
1996-04-01	24.559
1996-07-01	24.196
1996-10-01	24.322
1997-01-01	25.903
1997-04-01	30.148
1997-07-01	32.626
1997-10-01	32.835
1998-01-01	35.253
1998-04-01	40.735
1998-07-01	47.130
1998-10-01	45.663
1999-01-01	46.524
1999-04-01	47.443
1999-07-01	48.582
1999-10-01	50.601
2000-01-01	52.169
2000-04-01	55.910
2000-07-01	76.859
2000-10-01	77.245
2001-01-01	77.097
2001-04-01	76.515
2001-07-01	78.057
2001-10-01	77.604
2002-01-01	78.653
2002-04-01	81.662
2002-07-01	82.532
2002-10-01	83.356
2003-01-01	87.782
2003-04-01	89.526
2003-07-01	94.477
2003-10-01	97.812
2004-01-01	100.033
2004-04-01	105.261
2004-07-01	106.749
2004-10-01	113.353
2005-01-01	118.543
2005-04-01	124.424
2005-07-01	120.085
2005-10-01	121.589
2006-01-01	130.277
2006-04-01	131.552
2006-07-01	132.755
2006-10-01	140.380
2007-01-01	146.464
2007-04-01	145.550
2007-07-01	147.684
2007-10-01	153.228
2008-01-01	156.595
2008-04-01	166.360
2008-07-01	158.656
2008-10-01	156.374
2009-01-01	153.191
2009-04-01	162.472
2009-07-01	170.081
2009-10-01	172.790
2010-01-01	175.869
2010-04-01	173.985
2010-07-01	191.597
2010-10-01	191.368
2011-01-01	206.481
2011-04-01	216.881
2011-07-01	211.518
2011-10-01	207.906
2012-01-01	221.404
2012-04-01	232.189
2012-07-01	240.461
2012-10-01	254.005
2013-01-01	250.060
2013-04-01	253.795
2013-07-01	265.851
2013-10-01	284.766
2014-01-01	275.432
2014-04-01	273.962
2014-07-01	265.514
2014-10-01	261.325
2015-01-01	250.772
2015-04-01	253.862