Quarter	Billions of US Dollars
1995-10-01	27.235
1996-01-01	27.769
1996-04-01	28.425
1996-07-01	29.985
1996-10-01	32.573
1997-01-01	32.507
1997-04-01	32.195
1997-07-01	32.805
1997-10-01	33.541
1998-01-01	37.409
1998-04-01	40.286
1998-07-01	42.772
1998-10-01	46.952
1999-01-01	43.750
1999-04-01	46.696
1999-07-01	47.711
1999-10-01	49.271
2000-01-01	51.356
2000-04-01	52.934
2000-07-01	51.898
2000-10-01	58.527
2001-01-01	60.640
2001-04-01	63.301
2001-07-01	61.975
2001-10-01	65.843
2002-01-01	64.928
2002-04-01	68.527
2002-07-01	69.733
2002-10-01	76.426
2003-01-01	73.166
2003-04-01	75.331
2003-07-01	74.872
2003-10-01	79.276
2004-01-01	78.821
2004-04-01	80.535
2004-07-01	84.013
2004-10-01	91.696
2005-01-01	86.117
2005-04-01	82.962
2005-07-01	84.938
2005-10-01	85.709
2006-01-01	88.118
2006-04-01	94.221
2006-07-01	101.759
2006-10-01	116.166
2007-01-01	119.362
2007-04-01	130.846
2007-07-01	145.974
2007-10-01	166.303
2008-01-01	189.905
2008-04-01	206.101
2008-07-01	194.462
2008-10-01	170.888
2009-01-01	156.852
2009-04-01	171.908
2009-07-01	186.200
2009-10-01	182.618
2010-01-01	184.493
2010-04-01	161.187
2010-07-01	187.956
2010-10-01	187.087
2011-01-01	200.173
2011-04-01	208.849
2011-07-01	189.860
2011-10-01	188.550
2012-01-01	210.657
2012-04-01	198.149
2012-07-01	213.766
2012-10-01	224.166
2013-01-01	213.947
2013-04-01	216.352
2013-07-01	231.297
2013-10-01	240.092
2014-01-01	243.242
2014-04-01	249.705
2014-07-01	233.000
2014-10-01	225.405
2015-01-01	212.427
2015-04-01	219.819
2015-07-01	223.191
2015-10-01	217.570
2016-01-01	232.689
2016-04-01	221.372
2016-07-01	227.785
2016-10-01	220.166
2017-01-01	232.214
2017-04-01	247.265
2017-07-01	252.014
2017-10-01	263.842
2018-01-01	275.046