Quarter	Billions of US Dollars
1970-10-01	20.079
1971-01-01	20.444
1971-04-01	21.071
1971-07-01	22.663
1971-10-01	24.708
1972-01-01	25.522
1972-04-01	26.607
1972-07-01	27.190
1972-10-01	28.768
1973-01-01	32.621
1973-04-01	37.758
1973-07-01	38.306
1973-10-01	35.605
1974-01-01	39.069
1974-04-01	41.302
1974-07-01	41.187
1974-10-01	46.021
1975-01-01	48.840
1975-04-01	49.768
1975-07-01	45.108
1975-10-01	48.433
1976-01-01	50.786
1976-04-01	51.926
1976-07-01	56.618
1976-10-01	61.709
1977-01-01	61.980
1977-04-01	65.581
1977-07-01	67.858
1977-10-01	77.164
1978-01-01	81.634
1978-04-01	82.425
1978-07-01	90.670
1978-10-01	99.643
1979-01-01	98.981
1979-04-01	103.405
1979-07-01	112.476
1979-10-01	116.361
1980-01-01	96.012
1980-04-01	109.326
1980-07-01	106.202
1980-10-01	99.790
1981-01-01	92.218
1981-04-01	81.678
1981-07-01	84.941
1981-10-01	88.920
1982-01-01	75.907
1982-04-01	74.080
1982-07-01	70.282
1982-10-01	77.752
1983-01-01	75.609
1983-04-01	71.629
1983-07-01	68.771
1983-10-01	67.711
1984-01-01	70.827
1984-04-01	67.177
1984-07-01	61.965
1984-10-01	61.775
1985-01-01	62.891
1985-04-01	64.222
1985-07-01	72.330
1985-10-01	79.454
1986-01-01	84.652
1986-04-01	91.007
1986-07-01	96.680
1986-10-01	102.295
1987-01-01	112.024
1987-04-01	114.587
1987-07-01	112.774
1987-10-01	133.146
1988-01-01	130.301
1988-04-01	122.729
1988-07-01	122.064
1988-10-01	133.164
1989-01-01	127.773
1989-04-01	130.657
1989-07-01	139.781
1989-10-01	161.368
1990-01-01	163.862
1990-04-01	173.064
1990-07-01	187.527
1990-10-01	199.227
1991-01-01	178.755
1991-04-01	173.484
1991-07-01	191.243
1991-10-01	213.659
1992-01-01	199.607
1992-04-01	220.608
1992-07-01	240.222
1992-10-01	233.107
1993-01-01	236.014
1993-04-01	230.782
1993-07-01	230.784
1993-10-01	228.886
1994-01-01	242.337
1994-04-01	259.490
1994-07-01	272.336
1994-10-01	275.257
1995-01-01	311.699
1995-04-01	313.958
1995-07-01	304.678
1995-10-01	304.187
1996-01-01	298.022
1996-04-01	294.339
1996-07-01	296.804
1996-10-01	295.765
1997-01-01	281.534
1997-04-01	279.517
1997-07-01	282.849
1997-10-01	285.452
1998-01-01	279.737
1998-04-01	297.041
1998-07-01	326.674
1998-10-01	335.834
1999-01-01	323.856
1999-04-01	319.539
1999-07-01	341.892
1999-10-01	331.691
2000-01-01	326.210
2000-04-01	336.463
2000-07-01	318.147
2000-10-01	348.751
2001-01-01	336.005
2001-04-01	330.459
2001-07-01	360.316
2001-10-01	354.448
2002-01-01	351.037
2002-04-01	403.032
2002-07-01	399.851
2002-10-01	427.459
2003-01-01	444.191
2003-04-01	478.330
2003-07-01	497.488
2003-10-01	552.772
2004-01-01	544.311
2004-04-01	549.472
2004-07-01	571.596
2004-10-01	640.832
2005-01-01	613.841
2005-04-01	578.808
2005-07-01	580.002
2005-10-01	573.623
2006-01-01	596.589
2006-04-01	638.412
2006-07-01	646.787
2006-10-01	681.126
2007-01-01	711.781
2007-04-01	744.901
2007-07-01	807.574
2007-10-01	860.289
2008-01-01	956.845
2008-04-01	989.026
2008-07-01	927.856
2008-10-01	938.899
2009-01-01	920.390
2009-04-01	986.130
2009-07-01	1031.066
2009-10-01	1018.934
2010-01-01	949.662
2010-04-01	870.063
2010-07-01	953.262
2010-10-01	925.861
2011-01-01	1004.511
2011-04-01	1052.811
2011-07-01	999.186
2011-10-01	978.480
2012-01-01	1024.353
2012-04-01	983.962
2012-07-01	1018.629
2012-10-01	1049.939
2013-01-01	1049.375
2013-04-01	1076.621
2013-07-01	1096.637
2013-10-01	1113.993
2014-01-01	1109.304
2014-04-01	1110.205
2014-07-01	1040.462
2014-10-01	1010.686
2015-01-01	916.537
2015-04-01	936.201
2015-07-01	995.708
2015-10-01	956.258
2016-01-01	1045.269
2016-04-01	1031.099
2016-07-01	1033.090
2016-10-01	1006.249
2017-01-01	1026.233
2017-04-01	1092.750
2017-07-01	1115.658
2017-10-01	1142.215
2018-01-01	1177.952