Quarter	Billions of US Dollars
1969-10-01	78.945
1970-01-01	80.175
1970-04-01	82.445
1970-07-01	84.541
1970-10-01	91.904
1971-01-01	94.276
1971-04-01	97.752
1971-07-01	100.476
1971-10-01	112.724
1972-01-01	120.598
1972-04-01	127.944
1972-07-01	131.693
1972-10-01	136.664
1973-01-01	156.747
1973-04-01	179.636
1973-07-01	181.327
1973-10-01	172.259
1974-01-01	172.456
1974-04-01	176.125
1974-07-01	184.333
1974-10-01	208.430
1975-01-01	223.569
1975-04-01	239.012
1975-07-01	217.794
1975-10-01	234.346
1976-01-01	229.501
1976-04-01	232.519
1976-07-01	230.473
1976-10-01	240.330
1977-01-01	244.673
1977-04-01	254.179
1977-07-01	262.594
1977-10-01	286.586
1978-01-01	298.442
1978-04-01	310.989
1978-07-01	331.491
1978-10-01	362.578
1979-01-01	357.652
1979-04-01	370.189
1979-07-01	398.797
1979-10-01	427.725
1980-01-01	393.271
1980-04-01	445.071
1980-07-01	444.362
1980-10-01	433.532
1981-01-01	405.271
1981-04-01	361.152
1981-07-01	381.934
1981-10-01	391.885
1982-01-01	367.599
1982-04-01	349.161
1982-07-01	344.374
1982-10-01	384.949
1983-01-01	361.775
1983-04-01	354.378
1983-07-01	348.180
1983-10-01	348.760
1984-01-01	369.237
1984-04-01	354.857
1984-07-01	334.390
1984-10-01	333.962
1985-01-01	348.700
1985-04-01	360.025
1985-07-01	419.936
1985-10-01	468.910
1986-01-01	500.570
1986-04-01	516.206
1986-07-01	551.387
1986-10-01	586.702
1987-01-01	636.606
1987-04-01	646.324
1987-07-01	657.385
1987-10-01	782.917
1988-01-01	759.397
1988-04-01	715.180
1988-07-01	700.346
1988-10-01	772.577
1989-01-01	744.261
1989-04-01	745.279
1989-07-01	791.639
1989-10-01	909.119
1990-01-01	932.712
1990-04-01	961.085
1990-07-01	1031.718
1990-10-01	1070.707
1991-01-01	947.875
1991-04-01	908.781
1991-07-01	985.685
1991-10-01	1080.402
1992-01-01	1008.400
1992-04-01	1106.252
1992-07-01	1192.967
1992-10-01	1036.189
1993-01-01	1036.458
1993-04-01	997.204
1993-07-01	999.085
1993-10-01	945.019
1994-01-01	968.580
1994-04-01	1008.401
1994-07-01	1040.051
1994-10-01	1035.599
1995-01-01	1140.007
1995-04-01	1150.702
1995-07-01	1132.313
1995-10-01	1137.103
1996-01-01	1104.716
1996-04-01	1082.983
1996-07-01	1077.421
1996-10-01	1060.303
1997-01-01	981.862
1997-04-01	954.472
1997-07-01	971.557
1997-10-01	972.241
1998-01-01	956.892
1998-04-01	985.015
1998-07-01	1065.370
1998-10-01	1062.717
1999-01-01	983.606
1999-04-01	979.216
1999-07-01	1020.983
1999-10-01	985.950
2000-01-01	952.940
2000-04-01	974.867
2000-07-01	918.914
2000-10-01	985.624
2001-01-01	954.440
2001-04-01	935.539
2001-07-01	1030.443
2001-10-01	985.742
2002-01-01	990.938
2002-04-01	1130.385
2002-07-01	1124.242
2002-10-01	1202.045
2003-01-01	1260.587
2003-04-01	1324.891
2003-07-01	1354.586
2003-10-01	1472.910
2004-01-01	1440.511
2004-04-01	1464.274
2004-07-01	1517.346
2004-10-01	1686.429
2005-01-01	1625.709
2005-04-01	1557.410
2005-07-01	1571.345
2005-10-01	1587.031
2006-01-01	1672.430
2006-04-01	1808.984
2006-07-01	1835.307
2006-10-01	1948.002
2007-01-01	2014.497
2007-04-01	2109.604
2007-07-01	2262.863
2007-10-01	2413.702
2008-01-01	2655.713
2008-04-01	2690.700
2008-07-01	2482.295
2008-10-01	2446.390
2009-01-01	2342.050
2009-04-01	2459.611
2009-07-01	2555.786
2009-10-01	2534.326
2010-01-01	2389.761
2010-04-01	2191.708
2010-07-01	2457.734
2010-10-01	2442.141
2011-01-01	2625.818
2011-04-01	2733.103
2011-07-01	2575.216
2011-10-01	2480.182
2012-01-01	2577.009
2012-04-01	2446.937
2012-07-01	2503.358
2012-10-01	2561.912
2013-01-01	2492.573
2013-04-01	2547.644
2013-07-01	2640.379
2013-10-01	2704.539
2014-01-01	2716.446
2014-04-01	2649.656
2014-07-01	2447.225
2014-10-01	2377.549
2015-01-01	2130.609
2015-04-01	2240.714
2015-07-01	2266.510
2015-10-01	2212.704
2016-01-01	2341.369
2016-04-01	2302.430
2016-07-01	2323.882
2016-10-01	2220.919
2017-01-01	2296.100
2017-04-01	2475.301
2017-07-01	2582.423
2017-10-01	2668.032
2018-01-01	2769.154