Quarter	Billions of US Dollars
1994-10-01	6.429
1995-01-01	7.228
1995-04-01	7.769
1995-07-01	7.961
1995-10-01	8.380
1996-01-01	8.879
1996-04-01	9.380
1996-07-01	9.974
1996-10-01	10.294
1997-01-01	9.931
1997-04-01	10.074
1997-07-01	10.535
1997-10-01	11.150
1998-01-01	10.368
1998-04-01	11.420
1998-07-01	12.748
1998-10-01	13.958
1999-01-01	13.836
1999-04-01	14.259
1999-07-01	15.373
1999-10-01	15.185
2000-01-01	14.725
2000-04-01	15.746
2000-07-01	15.828
2000-10-01	18.330
2001-01-01	18.704
2001-04-01	19.480
2001-07-01	22.921
2001-10-01	24.265
2002-01-01	25.559
2002-04-01	31.409
2002-07-01	33.579
2002-10-01	38.516
2003-01-01	42.145
2003-04-01	47.132
2003-07-01	51.252
2003-10-01	59.397
2004-01-01	61.115
2004-04-01	65.156
2004-07-01	70.878
2004-10-01	83.796
2005-01-01	83.960
2005-04-01	83.508
2005-07-01	88.836
2005-10-01	93.368
2006-01-01	101.131
2006-04-01	112.214
2006-07-01	117.763
2006-10-01	129.908
2007-01-01	137.616
2007-04-01	146.868
2007-07-01	161.967
2007-10-01	175.887
2008-01-01	195.849
2008-04-01	201.987
2008-07-01	188.971
2008-10-01	187.135
2009-01-01	179.103
2009-04-01	190.875
2009-07-01	199.654
2009-10-01	197.909
2010-01-01	185.104
2010-04-01	168.522
2010-07-01	188.925
2010-10-01	184.470
2011-01-01	194.194
2011-04-01	195.980
2011-07-01	180.611
2011-10-01	170.637
2012-01-01	173.849
2012-04-01	162.283
2012-07-01	161.331
2012-10-01	162.935
2013-01-01	155.543
2013-04-01	157.056
2013-07-01	160.252
2013-10-01	162.143
2014-01-01	161.143
2014-04-01	157.999
2014-07-01	143.485
2014-10-01	136.958
2015-01-01	120.874
2015-04-01	124.976
2015-07-01	123.593
2015-10-01	119.409
2016-01-01	123.665
2016-04-01	119.731
2016-07-01	119.324
2016-10-01	111.549
2017-01-01	111.970
2017-04-01	118.371
2017-07-01	121.709
2017-10-01	121.461
2018-01-01	122.341