Quarter	Billions of US Dollars
1997-10-01	3764.332
1998-01-01	3790.808
1998-04-01	3722.149
1998-07-01	3906.934
1998-10-01	4661.705
1999-01-01	4650.087
1999-04-01	4767.143
1999-07-01	5543.492
1999-10-01	5828.738
2000-01-01	5925.192
2000-04-01	5954.044
2000-07-01	5790.795
2000-10-01	5595.301
2001-01-01	5396.082
2001-04-01	5525.214
2001-07-01	5651.004
2001-10-01	5163.619
2002-01-01	5164.614
2002-04-01	5902.991
2002-07-01	5731.351
2002-10-01	5874.892
2003-01-01	6073.410
2003-04-01	6082.303
2003-07-01	6526.751
2003-10-01	6853.250
2004-01-01	7336.273
2004-04-01	7081.494
2004-07-01	6937.361
2004-10-01	7541.032
2005-01-01	7358.603
2005-04-01	7213.791
2005-07-01	6944.978
2005-10-01	6695.200
2006-01-01	6631.284
2006-04-01	6739.788
2006-07-01	6594.430
2006-10-01	6524.824
2007-01-01	6556.472
2007-04-01	6255.599
2007-07-01	6715.377
2007-10-01	6947.739
2008-01-01	7869.258
2008-04-01	7361.810
2008-07-01	7358.422
2008-10-01	8673.096
2009-01-01	8051.411
2009-04-01	8481.377
2009-07-01	9175.635
2009-10-01	9006.049
2010-01-01	9023.361
2010-04-01	9777.254
2010-07-01	10492.237
2010-10-01	10888.490
2011-01-01	10685.032
2011-04-01	11250.194
2011-07-01	11944.457
2011-10-01	12093.556
2012-01-01	11553.202
2012-04-01	12148.285
2012-07-01	12537.058
2012-10-01	11369.684
2013-01-01	10572.008
2013-04-01	10106.324
2013-07-01	10362.768
2013-10-01	9742.425
2014-01-01	9946.898
2014-04-01	10309.093
2014-07-01	9591.796
2014-10-01	9066.770
2015-01-01	9065.326
2015-04-01	8908.673
2015-07-01	9097.858
2015-10-01	9188.624
2016-01-01	10132.544
2016-04-01	11383.370
2016-07-01	11449.097
2016-10-01	9814.603
2017-01-01	10268.340
2017-04-01	10316.023
2017-07-01	10284.377
2017-10-01	10339.347
2018-01-01	10963.929