Quarter	Billions of US Dollars
1989-10-01	54.129
1990-01-01	52.453
1990-04-01	54.126
1990-07-01	58.852
1990-10-01	56.681
1991-01-01	56.994
1991-04-01	58.335
1991-07-01	57.981
1991-10-01	54.895
1992-01-01	56.894
1992-04-01	56.944
1992-07-01	57.859
1992-10-01	55.722
1993-01-01	57.384
1993-04-01	59.989
1993-07-01	63.727
1993-10-01	66.780
1994-01-01	68.968
1994-04-01	73.566
1994-07-01	76.784
1994-10-01	82.389
1995-01-01	84.987
1995-04-01	90.047
1995-07-01	90.643
1995-10-01	95.496
1996-01-01	99.999
1996-04-01	105.137
1996-07-01	107.596
1996-10-01	110.931
1997-01-01	108.520
1997-04-01	108.396
1997-07-01	105.213
1997-10-01	98.656
1998-01-01	92.620
1998-04-01	88.838
1998-07-01	87.073
1998-10-01	93.875
1999-01-01	95.128
1999-04-01	96.666
1999-07-01	96.276
1999-10-01	99.128
2000-01-01	95.196
2000-04-01	91.989
2000-07-01	80.742
2000-10-01	89.764
2001-01-01	82.857
2001-04-01	85.765
2001-07-01	85.213
2001-10-01	88.482
2002-01-01	95.929
2002-04-01	107.791
2002-07-01	106.015
2002-10-01	120.159
2003-01-01	128.729
2003-04-01	136.970
2003-07-01	143.377
2003-10-01	161.128
2004-01-01	167.579
2004-04-01	163.415
2004-07-01	177.011
2004-10-01	198.352
2005-01-01	199.227
2005-04-01	200.254
2005-07-01	204.868
2005-10-01	210.207
2006-01-01	191.250
2006-04-01	196.324
2006-07-01	214.322
2006-10-01	233.967
2007-01-01	246.585
2007-04-01	274.013
2007-07-01	275.266
2007-10-01	287.966
2008-01-01	299.918
2008-04-01	298.691
2008-07-01	266.642
2008-10-01	229.063
2009-01-01	231.580
2009-04-01	265.596
2009-07-01	294.376
2009-10-01	297.460
2010-01-01	292.666
2010-04-01	286.478
2010-07-01	307.312
2010-10-01	326.268
2011-01-01	327.113
2011-04-01	360.147
2011-07-01	336.113
2011-10-01	338.037
2012-01-01	362.860
2012-04-01	356.896
2012-07-01	373.712
2012-10-01	377.185
2013-01-01	387.880
2013-04-01	356.463
2013-07-01	383.971
2013-10-01	388.371
2014-01-01	410.876
2014-04-01	420.243
2014-07-01	377.234
2014-10-01	386.112
2015-01-01	373.431
2015-04-01	337.853
2015-07-01	322.640
2015-10-01	351.687
2016-01-01	360.057
2016-04-01	376.130
2016-07-01	391.754
2016-10-01	380.686
2017-01-01	387.078
2017-04-01	411.352
2017-07-01	411.903
2017-10-01	407.071
2018-01-01	418.064