Quarter	Billions of US Dollars
1969-01-01	41.055
1969-04-01	42.783
1969-07-01	44.012
1969-10-01	45.123
1970-01-01	45.350
1970-04-01	47.452
1970-07-01	49.656
1970-10-01	50.695
1971-01-01	52.062
1971-04-01	53.009
1971-07-01	55.755
1971-10-01	57.611
1972-01-01	59.935
1972-04-01	62.401
1972-07-01	64.243
1972-10-01	65.139
1973-01-01	67.913
1973-04-01	70.942
1973-07-01	72.607
1973-10-01	77.222
1974-01-01	83.120
1974-04-01	88.094
1974-07-01	91.871
1974-10-01	95.188
1975-01-01	98.519
1975-04-01	99.481
1975-07-01	102.351
1975-10-01	105.848
1976-01-01	115.030
1976-04-01	121.376
1976-07-01	124.354
1976-10-01	123.023
1977-01-01	123.965
1977-04-01	127.379
1977-07-01	129.086
1977-10-01	129.301
1978-01-01	130.375
1978-04-01	134.781
1978-07-01	132.043
1978-10-01	135.733
1979-01-01	147.941
1979-04-01	154.589
1979-07-01	162.381
1979-10-01	168.354
1980-01-01	175.613
1980-04-01	192.157
1980-07-01	194.819
1980-10-01	200.041
1981-01-01	215.257
1981-04-01	230.391
1981-07-01	244.779
1981-10-01	258.228
1982-01-01	257.984
1982-04-01	249.531
1982-07-01	264.074
1982-10-01	259.993
1983-01-01	260.028
1983-04-01	257.635
1983-07-01	255.381
1983-10-01	251.283
1984-01-01	251.988
1984-04-01	247.776
1984-07-01	250.939
1984-10-01	251.670
1985-01-01	251.681
1985-04-01	255.397
1985-07-01	262.959
1985-10-01	259.713
1986-01-01	266.001
1986-04-01	275.560
1986-07-01	276.581
1986-10-01	279.987
1987-01-01	298.906
1987-04-01	302.729
1987-07-01	311.574
1987-10-01	323.160
1988-01-01	355.414
1988-04-01	371.086
1988-07-01	381.516
1988-10-01	400.548
1989-01-01	412.531
1989-04-01	425.276
1989-07-01	445.693
1989-10-01	464.908
1990-01-01	474.719
1990-04-01	490.567
1990-07-01	499.574
1990-10-01	502.491
1991-01-01	513.649
1991-04-01	539.972
1991-07-01	532.205
1991-10-01	528.147
1992-01-01	517.506
1992-04-01	528.874
1992-07-01	507.795
1992-10-01	505.171
1993-01-01	520.591
1993-04-01	518.645
1993-07-01	500.495
1993-10-01	507.795
1994-01-01	497.089
1994-04-01	503.913
1994-07-01	513.481
1994-10-01	489.889
1995-01-01	501.213
1995-04-01	511.163
1995-07-01	523.027
1995-10-01	515.992
1996-01-01	515.372
1996-04-01	518.736
1996-07-01	522.961
1996-10-01	542.825
1997-01-01	555.879
1997-04-01	563.772
1997-07-01	565.244
1997-10-01	555.863
1998-01-01	567.454
1998-04-01	571.840
1998-07-01	555.541
1998-10-01	553.166
1999-01-01	576.272
1999-04-01	598.274
1999-07-01	605.229
1999-10-01	603.906
2000-01-01	630.962
2000-04-01	630.177
2000-07-01	633.277
2000-10-01	638.030
2001-01-01	639.176
2001-04-01	669.263
2001-07-01	668.863
2001-10-01	656.582
2002-01-01	678.767
2002-04-01	719.324
2002-07-01	691.646
2002-10-01	695.266
2003-01-01	746.908
2003-04-01	811.524
2003-07-01	809.733
2003-10-01	847.307
2004-01-01	862.110
2004-04-01	840.838
2004-07-01	888.831
2004-10-01	946.445
2005-01-01	919.812
2005-04-01	926.600
2005-07-01	973.135
2005-10-01	966.897
2006-01-01	990.468
2006-04-01	1044.472
2006-07-01	1062.789
2006-10-01	1051.798
2007-01-01	1123.765
2007-04-01	1243.571
2007-07-01	1339.071
2007-10-01	1377.900
2008-01-01	1369.941
2008-04-01	1341.637
2008-07-01	1315.904
2008-10-01	1151.966
2009-01-01	1138.173
2009-04-01	1239.019
2009-07-01	1338.714
2009-10-01	1357.122
2010-01-01	1395.348
2010-04-01	1364.977
2010-07-01	1391.852
2010-10-01	1448.363
2011-01-01	1524.751
2011-04-01	1562.140
2011-07-01	1483.449
2011-10-01	1510.943
2012-01-01	1595.053
2012-04-01	1587.233
2012-07-01	1687.063
2012-10-01	1697.865
2013-01-01	1719.961
2013-04-01	1696.303
2013-07-01	1764.801
2013-10-01	1745.180
2014-01-01	1713.704
2014-04-01	1784.366
2014-07-01	1750.375
2014-10-01	1710.027
2015-01-01	1648.869
2015-04-01	1715.652
2015-07-01	1603.881
2015-10-01	1586.872
2016-01-01	1696.809
2016-04-01	1727.700
2016-07-01	1723.293
2016-10-01	1685.326
2017-01-01	1756.316
2017-04-01	1844.325
2017-07-01	1932.244
2017-10-01	1958.829
2018-01-01	1919.554