Quarter	Billions of US Dollars
1994-10-01	38.104
1995-01-01	30.915
1995-04-01	36.957
1995-07-01	39.387
1995-10-01	35.117
1996-01-01	38.426
1996-04-01	40.493
1996-07-01	42.993
1996-10-01	43.482
1997-01-01	46.091
1997-04-01	47.026
1997-07-01	48.604
1997-10-01	47.598
1998-01-01	47.087
1998-04-01	45.822
1998-07-01	41.099
1998-10-01	45.120
1999-01-01	49.329
1999-04-01	50.695
1999-07-01	50.542
1999-10-01	51.249
2000-01-01	54.524
2000-04-01	52.381
2000-07-01	54.802
2000-10-01	53.597
2001-01-01	56.232
2001-04-01	58.959
2001-07-01	57.247
2001-10-01	61.733
2002-01-01	64.944
2002-04-01	60.577
2002-07-01	61.154
2002-10-01	62.152
2003-01-01	62.160
2003-04-01	66.122
2003-07-01	64.810
2003-10-01	65.445
2004-01-01	68.846
2004-04-01	69.325
2004-07-01	73.103
2004-10-01	78.930
2005-01-01	82.777
2005-04-01	88.611
2005-07-01	91.565
2005-10-01	98.159
2006-01-01	102.127
2006-04-01	102.566
2006-07-01	110.497
2006-10-01	116.296
2007-01-01	117.346
2007-04-01	123.292
2007-07-01	127.263
2007-10-01	142.476
2008-01-01	150.883
2008-04-01	158.988
2008-07-01	151.155
2008-10-01	118.361
2009-01-01	118.846
2009-04-01	127.060
2009-07-01	124.617
2009-10-01	124.944
2010-01-01	136.857
2010-04-01	133.323
2010-07-01	138.115
2010-10-01	142.861
2011-01-01	154.316
2011-04-01	161.231
2011-07-01	141.154
2011-10-01	142.369
2012-01-01	161.542
2012-04-01	156.575
2012-07-01	168.435
2012-10-01	169.080
2013-01-01	182.644
2013-04-01	175.144
2013-07-01	177.656
2013-10-01	180.956
2014-01-01	187.052
2014-04-01	190.387
2014-07-01	187.508
2014-10-01	173.443
2015-01-01	172.582
2015-04-01	170.969
2015-07-01	163.916
2015-10-01	162.628
2016-01-01	173.440
2016-04-01	164.627
2016-07-01	162.079
2016-10-01	155.354
2017-01-01	176.400
2017-04-01	186.704
2017-07-01	189.869
2017-10-01	178.040
2018-01-01	197.839