Quarter	Millions of US Dollars
1962-10-01	5
1963-01-01	5
1963-04-01	5
1963-07-01	5
1963-10-01	5
1964-01-01	5
1964-04-01	5
1964-07-01	5
1964-10-01	5
1965-01-01	5
1965-04-01	5
1965-07-01	5
1965-10-01	5
1966-01-01	70
1966-04-01	100
1966-07-01	115
1966-10-01	115
1967-01-01	130
1967-04-01	235
1967-07-01	235
1967-10-01	257
1968-01-01	445
1968-04-01	795
1968-07-01	935
1968-10-01	998
1969-01-01	1135
1969-04-01	1169
1969-07-01	1199
1969-10-01	1349
1970-01-01	1376
1970-04-01	1376
1970-07-01	1451
1970-10-01	1466
1971-01-01	2049
1971-04-01	2264
1971-07-01	2403
1971-10-01	2793
1972-01-01	3978
1972-04-01	5556
1972-07-01	7034
1972-10-01	8783
1973-01-01	10875
1973-04-01	12769
1973-07-01	13673
1973-10-01	14469
1974-01-01	15842
1974-04-01	17000
1974-07-01	18277
1974-10-01	21293
1975-01-01	24930
1975-04-01	28842
1975-07-01	30394
1975-10-01	35527
1976-01-01	42729
1976-04-01	48120
1976-07-01	53155
1976-10-01	59591
1977-01-01	64084
1977-04-01	70407
1977-07-01	75821
1977-10-01	84993
1978-01-01	93304
1978-04-01	99962
1978-07-01	110039
1978-10-01	114488
1979-01-01	119589
1979-04-01	125646
1979-07-01	134508
1979-10-01	137612
1980-01-01	133032
1980-04-01	146999
1980-07-01	148709
1980-10-01	148404
1981-01-01	147207
1981-04-01	145631
1981-07-01	152549
1981-10-01	165811
1982-01-01	170108
1982-04-01	173162
1982-07-01	179261
1982-10-01	192598
1983-01-01	200522
1983-04-01	206039
1983-07-01	208466
1983-10-01	217467
1984-01-01	233653
1984-04-01	236456
1984-07-01	245618
1984-10-01	264019
1985-01-01	284566
1985-04-01	304860
1985-07-01	341405
1985-10-01	368069
1986-01-01	402864
1986-04-01	451802
1986-07-01	500212
1986-10-01	531835
1987-01-01	612402
1987-04-01	642506
1987-07-01	673048
1987-10-01	734530
1988-01-01	748671
1988-04-01	756796
1988-07-01	786838
1988-10-01	830975
1989-01-01	848090
1989-04-01	870432
1989-07-01	917026
1989-10-01	962473
1990-01-01	991569
1990-04-01	1027971
1990-07-01	1108765
1990-10-01	1145626
1991-01-01	1137818
1991-04-01	1154137
1991-07-01	1227703
1991-10-01	1301977
1992-01-01	1284817
1992-04-01	1364589
1992-07-01	1408736
1992-10-01	1355553
1993-01-01	1378592
1993-04-01	1412226
1993-07-01	1451054
1993-10-01	1448880
1994-01-01	1538379
1994-04-01	1601010
1994-07-01	1679093
1994-10-01	1694672
1995-01-01	1839008
1995-04-01	1887060
1995-07-01	1880147
1995-10-01	1909023
1996-01-01	1952906
1996-04-01	2009354
1996-07-01	2067562
1996-10-01	2138702
1997-01-01	2143924
1997-04-01	2236839
1997-07-01	2291502
1997-10-01	2276873
1998-01-01	2352189
1998-04-01	2463930
1998-07-01	2621184
1998-10-01	2719500
1999-01-01	2800114
1999-04-01	2961916
1999-07-01	3261540
1999-10-01	3322496
2000-01-01	3415960
2000-04-01	3611491
2000-07-01	3683253
2000-10-01	3992118
2001-01-01	4185305
2001-04-01	4386300
2001-07-01	4671675
2001-10-01	4831330
2002-01-01	5019300
2002-04-01	5604658
2002-07-01	5687417
2002-10-01	5998369
2003-01-01	6349699
2003-04-01	6769670
2003-07-01	7097703
2003-10-01	7802043
2004-01-01	8042384
2004-04-01	8237725
2004-07-01	8596940
2004-10-01	9443763
2005-01-01	9496317
2005-04-01	9463702
2005-07-01	9573599
2005-10-01	9835077
2006-01-01	10392487
2006-04-01	11186575
2006-07-01	11551840
2006-10-01	12464042
2007-01-01	13182598
2007-04-01	14087652
2007-07-01	14755136
2007-10-01	15309634
2008-01-01	16314196
2008-04-01	17035850
2008-07-01	16047658
2008-10-01	15827956
2009-01-01	15629456
2009-04-01	16953986
2009-07-01	17598541
2009-10-01	17558782
2010-01-01	17066687
2010-04-01	16115490
2010-07-01	17491928
2010-10-01	17281497
2011-01-01	18093057
2011-04-01	18363250
2011-07-01	17511943
2011-10-01	17093844
2012-01-01	17659344
2012-04-01	16870997
2012-07-01	17185696
2012-10-01	17405840
2013-01-01	16912258
2013-04-01	16985904
2013-07-01	17442276
2013-10-01	17731958
2014-01-01	17679986
2014-04-01	17805250
2014-07-01	16988286
2014-10-01	16508250
2015-01-01	15588408
2015-04-01	16130749
2015-07-01	16037044
2015-10-01	15699829
2016-01-01	16164554
2016-04-01	15999823
2016-07-01	16159393
2016-10-01	15560448
2017-01-01	15872570
2017-04-01	16577478
2017-07-01	17075223
2017-10-01	17286465
2018-01-01	17699989
2018-04-01	17177301