Quarter	Billions of US Dollars
1955-01-01	22.776
1955-04-01	23.733
1955-07-01	24.940
1955-10-01	26.393
1956-01-01	27.319
1956-04-01	28.534
1956-07-01	29.300
1956-10-01	30.097
1957-01-01	30.724
1957-04-01	31.361
1957-07-01	32.189
1957-10-01	33.270
1958-01-01	33.988
1958-04-01	34.881
1958-07-01	35.830
1958-10-01	37.338
1959-01-01	38.133
1959-04-01	39.430
1959-07-01	41.334
1959-10-01	43.994
1960-01-01	45.352
1960-04-01	47.003
1960-07-01	48.557
1960-10-01	49.461
1961-01-01	53.818
1961-04-01	56.011
1961-07-01	57.731
1961-10-01	59.838
1962-01-01	61.287
1962-04-01	63.700
1962-07-01	65.396
1962-10-01	67.757
1963-01-01	69.330
1963-04-01	72.078
1963-07-01	73.740
1963-10-01	76.368
1964-01-01	77.830
1964-04-01	80.667
1964-07-01	82.902
1964-10-01	85.625
1965-01-01	87.676
1965-04-01	90.289
1965-07-01	92.226
1965-10-01	95.049
1966-01-01	96.928
1966-04-01	100.231
1966-07-01	102.077
1966-10-01	103.707
1967-01-01	104.094
1967-04-01	105.682
1967-07-01	106.850
1967-10-01	109.790
1968-01-01	111.558
1968-04-01	114.477
1968-07-01	117.688
1968-10-01	122.843
1969-01-01	125.460
1969-04-01	129.850
1969-07-01	134.656
1969-10-01	153.628
1970-01-01	157.813
1970-04-01	164.436
1970-07-01	167.807
1970-10-01	173.451
1971-01-01	176.888
1971-04-01	189.284
1971-07-01	206.652
1971-10-01	219.377
1972-01-01	231.373
1972-04-01	241.000
1972-07-01	243.536
1972-10-01	256.007
1973-01-01	298.185
1973-04-01	360.620
1973-07-01	371.297
1973-10-01	342.321
1974-01-01	371.895
1974-04-01	373.833
1974-07-01	369.109
1974-10-01	415.602
1975-01-01	429.199
1975-04-01	433.555
1975-07-01	387.953
1975-10-01	407.672
1976-01-01	423.122
1976-04-01	428.112
1976-07-01	461.894
1976-10-01	491.561
1977-01-01	489.005
1977-04-01	512.817
1977-07-01	528.666
1977-10-01	598.847
1978-01-01	624.380
1978-04-01	624.097
1978-07-01	683.151
1978-10-01	752.987
1979-01-01	743.003
1979-04-01	776.109
1979-07-01	839.334
1979-10-01	874.088
1980-01-01	786.459
1980-04-01	894.357
1980-07-01	882.976
1980-10-01	851.086
1981-01-01	808.535
1981-04-01	724.348
1981-07-01	758.737
1981-10-01	803.069
1982-01-01	751.178
1982-04-01	750.099
1982-07-01	741.651
1982-10-01	808.208
1983-01-01	787.101
1983-04-01	766.588
1983-07-01	753.255
1983-10-01	746.132
1984-01-01	786.872
1984-04-01	745.340
1984-07-01	696.433
1984-10-01	683.159
1985-01-01	702.874
1985-04-01	715.539
1985-07-01	821.047
1985-10-01	915.461
1986-01-01	971.739
1986-04-01	1040.081
1986-07-01	1130.306
1986-10-01	1198.558
1987-01-01	1284.172
1987-04-01	1277.526
1987-07-01	1289.982
1987-10-01	1519.630
1988-01-01	1452.418
1988-04-01	1341.932
1988-07-01	1311.766
1988-10-01	1419.905
1989-01-01	1338.742
1989-04-01	1320.237
1989-07-01	1400.779
1989-10-01	1586.650
1990-01-01	1612.667
1990-04-01	1646.843
1990-07-01	1795.089
1990-10-01	1929.748
1991-01-01	1705.295
1991-04-01	1656.081
1991-07-01	1862.910
1991-10-01	2099.039
1992-01-01	1978.686
1992-04-01	2178.449
1992-07-01	2406.090
1992-10-01	2121.192
1993-01-01	2168.196
1993-04-01	2121.024
1993-07-01	2256.750
1993-10-01	2176.300
1994-01-01	2240.286
1994-04-01	2386.024
1994-07-01	2509.263
1994-10-01	2565.784
1995-01-01	2808.501
1995-04-01	2864.364
1995-07-01	2823.564
1995-10-01	2844.650
1996-01-01	2792.230
1996-04-01	2747.275
1996-07-01	2771.601
1996-10-01	2776.354
1997-01-01	2590.107
1997-04-01	2528.629
1997-07-01	2519.833
1997-10-01	2522.952
1998-01-01	2468.636
1998-04-01	2553.387
1998-07-01	2794.654
1998-10-01	2858.552
1999-01-01	2595.585
1999-04-01	2543.870
1999-07-01	2674.954
1999-10-01	2587.515
2000-01-01	2469.377
2000-04-01	2518.583
2000-07-01	2327.300
2000-10-01	2535.539
2001-01-01	2428.473
2001-04-01	2350.798
2001-07-01	2549.106
2001-10-01	2482.828
2002-01-01	2462.136
2002-04-01	2840.857
2002-07-01	2832.662
2002-10-01	3012.582
2003-01-01	3145.519
2003-04-01	3321.354
2003-07-01	3380.813
2003-10-01	3673.104
2004-01-01	3519.628
2004-04-01	3493.288
2004-07-01	3553.052
2004-10-01	3897.976
2005-01-01	3686.230
2005-04-01	3450.285
2005-07-01	3436.428
2005-10-01	3354.952
2006-01-01	3471.695
2006-04-01	3680.432
2006-07-01	3689.751
2006-10-01	3817.797
2007-01-01	3865.909
2007-04-01	3927.702
2007-07-01	4125.347
2007-10-01	4333.331
2008-01-01	4638.727
2008-04-01	4646.838
2008-07-01	4238.527
2008-10-01	4148.263
2009-01-01	3966.447
2009-04-01	4210.958
2009-07-01	4336.074
2009-10-01	4251.880
2010-01-01	3978.614
2010-04-01	3638.650
2010-07-01	4049.213
2010-10-01	3938.383
2011-01-01	4108.771
2011-04-01	4196.434
2011-07-01	3967.166
2011-10-01	3830.216
2012-01-01	3962.248
2012-04-01	3767.218
2012-07-01	3906.502
2012-10-01	3984.139
2013-01-01	3900.567
2013-04-01	4026.828
2013-07-01	4186.976
2013-10-01	4297.764
2014-01-01	4314.820
2014-04-01	4313.349
2014-07-01	3962.402
2014-10-01	3800.908
2015-01-01	3422.881
2015-04-01	3590.057
2015-07-01	3614.470
2015-10-01	3515.112
2016-01-01	3729.769
2016-04-01	3656.554
2016-07-01	3717.321
2016-10-01	3513.665
2017-01-01	3630.343
2017-04-01	3902.346
2017-07-01	4104.648
2017-10-01	4210.397
2018-01-01	4343.393