Quarter	Billions of US Dollars
1999-01-01	3207.542
1999-04-01	3174.186
1999-07-01	3346.381
1999-10-01	3225.224
2000-01-01	3107.658
2000-04-01	3165.734
2000-07-01	2964.149
2000-10-01	3208.215
2001-01-01	3078.225
2001-04-01	3003.786
2001-07-01	3273.076
2001-10-01	3198.044
2002-01-01	3196.405
2002-04-01	3715.735
2002-07-01	3718.899
2002-10-01	4039.512
2003-01-01	4232.664
2003-04-01	4517.860
2003-07-01	4682.074
2003-10-01	5171.216
2004-01-01	5060.660
2004-04-01	5170.543
2004-07-01	5376.419
2004-10-01	6025.938
2005-01-01	5813.752
2005-04-01	5574.990
2005-07-01	5663.972
2005-10-01	5674.428
2006-01-01	5933.384
2006-04-01	6386.568
2006-07-01	6472.625
2006-10-01	6872.775
2007-01-01	7066.286
2007-04-01	7318.844
2007-07-01	7799.694
2007-10-01	8241.047
2008-01-01	8923.074
2008-04-01	9047.695
2008-07-01	8279.545
2008-10-01	8118.254
2009-01-01	7789.667
2009-04-01	8334.091
2009-07-01	8664.143
2009-10-01	8581.894
2010-01-01	8045.932
2010-04-01	7379.755
2010-07-01	8236.587
2010-10-01	8131.118
2011-01-01	8646.055
2011-04-01	8869.170
2011-07-01	8310.127
2011-10-01	7983.606
2012-01-01	8220.534
2012-04-01	7770.197
2012-07-01	7967.328
2012-10-01	8130.010
2013-01-01	7851.247
2013-04-01	8017.196
2013-07-01	8270.708
2013-10-01	8427.347
2014-01-01	8402.893
2014-04-01	8346.088
2014-07-01	7687.790
2014-10-01	7438.938
2015-01-01	6590.268
2015-04-01	6884.927
2015-07-01	6919.450
2015-10-01	6747.513
2016-01-01	7061.354
2016-04-01	6935.566
2016-07-01	7009.028
2016-10-01	6686.494
2017-01-01	6807.980
2017-04-01	7327.813
2017-07-01	7626.371
2017-10-01	7803.752
2018-01-01	8032.583