Quarter	Billions of US Dollars
1953-07-01	3.059
1953-10-01	3.097
1954-01-01	3.134
1954-04-01	3.177
1954-07-01	3.221
1954-10-01	3.267
1955-01-01	3.306
1955-04-01	3.312
1955-07-01	3.356
1955-10-01	3.395
1956-01-01	3.437
1956-04-01	3.490
1956-07-01	3.548
1956-10-01	3.583
1957-01-01	3.628
1957-04-01	3.670
1957-07-01	3.729
1957-10-01	3.789
1958-01-01	3.860
1958-04-01	3.932
1958-07-01	4.019
1958-10-01	4.113
1959-01-01	4.271
1959-04-01	4.414
1959-07-01	4.549
1959-10-01	4.691
1960-01-01	4.855
1960-04-01	5.013
1960-07-01	5.179
1960-10-01	5.326
1961-01-01	5.474
1961-04-01	5.626
1961-07-01	5.829
1961-10-01	6.011
1962-01-01	6.192
1962-04-01	6.381
1962-07-01	6.550
1962-10-01	6.772
1963-01-01	6.987
1963-04-01	7.217
1963-07-01	7.436
1963-10-01	7.659
1964-01-01	7.969
1964-04-01	8.254
1964-07-01	8.546
1964-10-01	8.863
1965-01-01	9.199
1965-04-01	9.530
1965-07-01	9.934
1965-10-01	10.300
1966-01-01	10.693
1966-04-01	11.095
1966-07-01	11.539
1966-10-01	11.962
1967-01-01	12.321
1967-04-01	12.668
1967-07-01	13.049
1967-10-01	12.481
1968-01-01	12.917
1968-04-01	13.268
1968-07-01	13.682
1968-10-01	14.093
1969-01-01	14.690
1969-04-01	15.264
1969-07-01	15.916
1969-10-01	16.560
1970-01-01	17.071
1970-04-01	17.597
1970-07-01	18.125
1970-10-01	18.680
1971-01-01	19.155
1971-04-01	19.562
1971-07-01	20.619
1971-10-01	21.732
1972-01-01	22.992
1972-04-01	24.023
1972-07-01	24.011
1972-10-01	26.353
1973-01-01	30.621
1973-04-01	35.244
1973-07-01	36.518
1973-10-01	34.853
1974-01-01	37.400
1974-04-01	39.314
1974-07-01	39.933
1974-10-01	44.802
1975-01-01	48.179
1975-04-01	49.421
1975-07-01	44.940
1975-10-01	46.601
1976-01-01	48.742
1976-04-01	49.568
1976-07-01	53.508
1976-10-01	55.668
1977-01-01	56.488
1977-04-01	56.213
1977-07-01	56.491
1977-10-01	61.621
1978-01-01	65.599
1978-04-01	66.254
1978-07-01	71.455
1978-10-01	77.167
1979-01-01	77.467
1979-04-01	77.723
1979-07-01	83.145
1979-10-01	80.886
1980-01-01	73.360
1980-04-01	82.730
1980-07-01	82.244
1980-10-01	77.721
1981-01-01	72.354
1981-04-01	65.454
1981-07-01	68.160
1981-10-01	69.015
1982-01-01	62.458
1982-04-01	61.791
1982-07-01	60.355
1982-10-01	64.473
1983-01-01	63.802
1983-04-01	61.974
1983-07-01	60.596
1983-10-01	60.396
1984-01-01	64.724
1984-04-01	63.188
1984-07-01	60.135
1984-10-01	60.295
1985-01-01	63.352
1985-04-01	66.439
1985-07-01	76.682
1985-10-01	89.551
1986-01-01	96.679
1986-04-01	107.388
1986-07-01	119.197
1986-10-01	133.217
1987-01-01	146.247
1987-04-01	147.490
1987-07-01	147.469
1987-10-01	179.794
1988-01-01	171.971
1988-04-01	161.910
1988-07-01	155.819
1988-10-01	168.336
1989-01-01	156.292
1989-04-01	154.401
1989-07-01	161.445
1989-10-01	184.350
1990-01-01	187.730
1990-04-01	193.480
1990-07-01	206.867
1990-10-01	219.970
1991-01-01	194.424
1991-04-01	185.730
1991-07-01	200.867
1991-10-01	222.471
1992-01-01	205.989
1992-04-01	224.258
1992-07-01	238.978
1992-10-01	208.524
1993-01-01	208.764
1993-04-01	200.068
1993-07-01	199.202
1993-10-01	195.579
1994-01-01	204.604
1994-04-01	214.755
1994-07-01	219.031
1994-10-01	218.458
1995-01-01	244.714
1995-04-01	251.404
1995-07-01	247.264
1995-10-01	251.117
1996-01-01	250.123
1996-04-01	246.120
1996-07-01	250.524
1996-10-01	250.450
1997-01-01	237.293
1997-04-01	233.934
1997-07-01	235.877
1997-10-01	237.067
1998-01-01	232.304
1998-04-01	240.777
1998-07-01	262.612
1998-10-01	261.201
1999-01-01	252.382
1999-04-01	248.162
1999-07-01	257.498
1999-10-01	248.784
2000-01-01	249.681
2000-04-01	249.495
2000-07-01	239.844
2000-10-01	256.860
2001-01-01	246.803
2001-04-01	242.872
2001-07-01	268.788
2001-10-01	267.744
2002-01-01	265.471
2002-04-01	304.976
2002-07-01	307.735
2002-10-01	326.981
2003-01-01	351.606
2003-04-01	373.916
2003-07-01	387.076
2003-10-01	419.105
2004-01-01	422.374
2004-04-01	428.477
2004-07-01	447.812
2004-10-01	504.395
2005-01-01	500.851
2005-04-01	484.180
2005-07-01	498.514
2005-10-01	505.936
2006-01-01	536.108
2006-04-01	578.612
2006-07-01	602.346
2006-10-01	647.216
2007-01-01	669.157
2007-04-01	687.136
2007-07-01	735.888
2007-10-01	791.858
2008-01-01	864.982
2008-04-01	875.459
2008-07-01	807.778
2008-10-01	798.266
2009-01-01	769.591
2009-04-01	818.372
2009-07-01	852.564
2009-10-01	842.486
2010-01-01	798.631
2010-04-01	727.324
2010-07-01	806.579
2010-10-01	786.827
2011-01-01	840.986
2011-04-01	861.511
2011-07-01	825.607
2011-10-01	800.091
2012-01-01	835.652
2012-04-01	792.825
2012-07-01	809.920
2012-10-01	837.695
2013-01-01	811.205
2013-04-01	825.091
2013-07-01	851.804
2013-10-01	853.979
2014-01-01	857.649
2014-04-01	847.423
2014-07-01	800.987
2014-10-01	775.553
2015-01-01	689.069
2015-04-01	715.700
2015-07-01	728.510
2015-10-01	708.721
2016-01-01	739.977
2016-04-01	723.186
2016-07-01	733.651
2016-10-01	685.543
2017-01-01	694.676
2017-04-01	741.349
2017-07-01	765.570
2017-10-01	780.321
2018-01-01	797.901