Quarter	Billions of US Dollars
1962-10-01	0.054
1963-01-01	0.061
1963-04-01	0.067
1963-07-01	0.071
1963-10-01	0.062
1964-01-01	0.067
1964-04-01	0.038
1964-07-01	0.041
1964-10-01	0.040
1965-01-01	0.041
1965-04-01	0.045
1965-07-01	0.047
1965-10-01	0.061
1966-01-01	0.072
1966-04-01	0.093
1966-07-01	0.113
1966-10-01	0.129
1967-01-01	0.147
1967-04-01	0.184
1967-07-01	0.231
1967-10-01	0.262
1968-01-01	0.272
1968-04-01	0.294
1968-07-01	0.351
1968-10-01	0.404
1969-01-01	0.485
1969-04-01	0.585
1969-07-01	0.675
1969-10-01	0.697
1970-01-01	0.729
1970-04-01	0.797
1970-07-01	0.883
1970-10-01	0.975
1971-01-01	1.021
1971-04-01	0.940
1971-07-01	1.020
1971-10-01	1.050
1972-01-01	1.058
1972-04-01	1.086
1972-07-01	1.164
1972-10-01	1.176
1973-01-01	1.269
1973-04-01	1.383
1973-07-01	1.511
1973-10-01	1.638
1974-01-01	1.861
1974-04-01	2.112
1974-07-01	2.427
1974-10-01	2.222
1975-01-01	2.222
1975-04-01	2.382
1975-07-01	2.561
1975-10-01	2.852
1976-01-01	2.854
1976-04-01	3.049
1976-07-01	3.374
1976-10-01	3.745
1977-01-01	3.758
1977-04-01	4.082
1977-07-01	4.528
1977-10-01	4.957
1978-01-01	5.027
1978-04-01	5.803
1978-07-01	6.030
1978-10-01	6.820
1979-01-01	6.992
1979-04-01	7.698
1979-07-01	8.818
1979-10-01	9.656
1980-01-01	8.763
1980-04-01	9.444
1980-07-01	9.779
1980-10-01	10.171
1981-01-01	10.651
1981-04-01	12.250
1981-07-01	13.692
1981-10-01	14.287
1982-01-01	14.887
1982-04-01	14.984
1982-07-01	16.017
1982-10-01	17.557
1983-01-01	18.346
1983-04-01	19.251
1983-07-01	20.450
1983-10-01	21.043
1984-01-01	22.039
1984-04-01	22.559
1984-07-01	23.691
1984-10-01	24.457
1985-01-01	24.065
1985-04-01	25.480
1985-07-01	25.843
1985-10-01	27.199
1986-01-01	28.303
1986-04-01	29.509
1986-07-01	31.022
1986-10-01	33.856
1987-01-01	36.540
1987-04-01	41.059
1987-07-01	42.706
1987-10-01	45.888
1988-01-01	50.912
1988-04-01	56.345
1988-07-01	61.483
1988-10-01	68.735
1989-01-01	74.854
1989-04-01	82.369
1989-07-01	88.444
1989-10-01	91.678
1990-01-01	93.879
1990-04-01	98.557
1990-07-01	105.703
1990-10-01	112.134
1991-01-01	118.396
1991-04-01	126.686
1991-07-01	131.141
1991-10-01	134.679
1992-01-01	138.155
1992-04-01	143.222
1992-07-01	150.551
1992-10-01	155.317
1993-01-01	158.374
1993-04-01	162.548
1993-07-01	171.326
1993-10-01	173.402
1994-01-01	183.352
1994-04-01	193.794
1994-07-01	208.054
1994-10-01	218.516
1995-01-01	231.266
1995-04-01	246.157
1995-07-01	252.919
1995-10-01	258.661
1996-01-01	263.119
1996-04-01	266.838
1996-07-01	275.933
1996-10-01	277.046
1997-01-01	270.147
1997-04-01	285.281
1997-07-01	285.695
1997-10-01	159.670
1998-01-01	190.414
1998-04-01	188.201
1998-07-01	180.134
1998-10-01	206.048
1999-01-01	203.106
1999-04-01	220.328
1999-07-01	215.677
1999-10-01	235.605
2000-01-01	274.213
2000-04-01	275.866
2000-07-01	285.437
2000-10-01	254.019
2001-01-01	248.658
2001-04-01	268.273
2001-07-01	283.679
2001-10-01	292.670
2002-01-01	315.527
2002-04-01	379.096
2002-07-01	393.773
2002-10-01	423.237
2003-01-01	402.013
2003-04-01	425.558
2003-07-01	445.688
2003-10-01	440.856
2004-01-01	459.851
2004-04-01	461.048
2004-07-01	469.370
2004-10-01	529.323
2005-01-01	542.435
2005-04-01	558.791
2005-07-01	564.643
2005-10-01	605.916
2006-01-01	635.275
2006-04-01	671.216
2006-07-01	688.224
2006-10-01	730.849
2007-01-01	735.473
2007-04-01	771.466
2007-07-01	797.394
2007-10-01	805.569
2008-01-01	778.450
2008-04-01	759.360
2008-07-01	673.264
2008-10-01	620.070
2009-01-01	591.844
2009-04-01	657.732
2009-07-01	726.723
2009-10-01	760.957
2010-01-01	793.235
2010-04-01	749.056
2010-07-01	826.190
2010-10-01	862.590
2011-01-01	898.179
2011-04-01	946.134
2011-07-01	871.363
2011-10-01	916.756
2012-01-01	944.417
2012-04-01	944.164
2012-07-01	982.420
2012-10-01	1044.354
2013-01-01	999.155
2013-04-01	993.690
2013-07-01	1069.321
2013-10-01	1118.527
2014-01-01	1114.701
2014-04-01	1184.166
2014-07-01	1158.254
2014-10-01	1147.060
2015-01-01	1144.727
2015-04-01	1166.074
2015-07-01	1131.541
2015-10-01	1171.372
2016-01-01	1229.586
2016-04-01	1245.683
2016-07-01	1336.515
2016-10-01	1262.521
2017-01-01	1379.968
2017-04-01	1376.506
2017-07-01	1408.077
2017-10-01	1537.322
2018-01-01	1559.222