Quarter	Billions of US Dollars
1993-07-01	109.782
1993-10-01	103.651
1994-01-01	105.945
1994-04-01	110.098
1994-07-01	114.399
1994-10-01	113.394
1995-01-01	131.003
1995-04-01	128.969
1995-07-01	132.206
1995-10-01	131.653
1996-01-01	127.694
1996-04-01	122.243
1996-07-01	121.733
1996-10-01	113.756
1997-01-01	106.334
1997-04-01	106.577
1997-07-01	110.004
1997-10-01	108.417
1998-01-01	107.529
1998-04-01	110.648
1998-07-01	123.641
1998-10-01	123.453
1999-01-01	117.698
1999-04-01	115.849
1999-07-01	119.515
1999-10-01	111.384
2000-01-01	105.773
2000-04-01	109.332
2000-07-01	105.985
2000-10-01	110.733
2001-01-01	104.676
2001-04-01	99.732
2001-07-01	111.081
2001-10-01	105.291
2002-01-01	106.902
2002-04-01	126.017
2002-07-01	125.707
2002-10-01	135.070
2003-01-01	138.638
2003-04-01	141.228
2003-07-01	146.615
2003-10-01	161.340
2004-01-01	160.437
2004-04-01	164.305
2004-07-01	166.236
2004-10-01	185.519
2005-01-01	182.294
2005-04-01	172.499
2005-07-01	172.517
2005-10-01	177.312
2006-01-01	182.568
2006-04-01	200.903
2006-07-01	200.895
2006-10-01	212.180
2007-01-01	221.623
2007-04-01	230.223
2007-07-01	240.560
2007-10-01	253.892
2008-01-01	289.329
2008-04-01	291.265
2008-07-01	273.703
2008-10-01	287.545
2009-01-01	283.750
2009-04-01	310.044
2009-07-01	324.179
2009-10-01	326.893
2010-01-01	322.011
2010-04-01	315.988
2010-07-01	355.743
2010-10-01	365.311
2011-01-01	379.102
2011-04-01	411.161
2011-07-01	375.772
2011-10-01	352.976
2012-01-01	362.231
2012-04-01	333.085
2012-07-01	341.491
2012-10-01	345.733
2013-01-01	326.386
2013-04-01	328.221
2013-07-01	332.618
2013-10-01	328.113
2014-01-01	329.765
2014-04-01	325.481
2014-07-01	301.450
2014-10-01	283.765
2015-01-01	275.179
2015-04-01	280.252