Quarter	Billions of US Dollars
1999-01-01	2794.711
1999-04-01	2783.353
1999-07-01	2933.001
1999-10-01	2955.040
2000-01-01	2963.815
2000-04-01	2903.245
2000-07-01	2877.783
2000-10-01	2977.868
2001-01-01	2901.575
2001-04-01	2888.896
2001-07-01	3055.947
2001-10-01	3071.358
2002-01-01	3052.456
2002-04-01	3373.437
2002-07-01	3583.128
2002-10-01	3739.204
2003-01-01	3661.648
2003-04-01	3936.368
2003-07-01	4057.507
2003-10-01	4434.462
2004-01-01	4598.719
2004-04-01	4637.760
2004-07-01	4755.516
2004-10-01	5238.646
2005-01-01	5180.906
2005-04-01	5156.533
2005-07-01	5219.673
2005-10-01	5234.538
2006-01-01	5360.989
2006-04-01	5814.083
2006-07-01	6098.128
2006-10-01	6478.033
2007-01-01	6477.214
2007-04-01	6734.536
2007-07-01	7061.760
2007-10-01	7145.560
2008-01-01	7234.308
2008-04-01	7288.002
2008-07-01	6764.487
2008-10-01	5757.797
2009-01-01	5622.020
2009-04-01	6441.586
2009-07-01	6424.812
2009-10-01	6515.804
2010-01-01	6298.632
2010-04-01	6298.754
2010-07-01	6828.299
2010-10-01	6624.210
2011-01-01	6879.715
2011-04-01	6988.243
2011-07-01	6948.934
2011-10-01	7040.782
2012-01-01	7341.613
2012-04-01	7271.965
2012-07-01	7633.268
2012-10-01	7643.898
2013-01-01	7174.347
2013-04-01	7240.191
2013-07-01	7638.142
2013-10-01	7799.553
2014-01-01	7881.034
2014-04-01	8118.144
2014-07-01	7814.912
2014-10-01	7754.524
2015-01-01	7471.740
2015-04-01	7834.358
2015-07-01	7657.637
2015-10-01	7509.644
2016-01-01	7448.156
2016-04-01	7295.502
2016-07-01	7257.120
2016-10-01	6857.359
2017-01-01	6989.815
2017-04-01	7273.215
2017-07-01	7561.663
2017-10-01	7771.257
2018-01-01	8083.712