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	5
1966-04-01	5
1966-07-01	5
1966-10-01	5
1967-01-01	5
1967-04-01	5
1967-07-01	5
1967-10-01	5
1968-01-01	5
1968-04-01	10
1968-07-01	10
1968-10-01	10
1969-01-01	10
1969-04-01	10
1969-07-01	10
1969-10-01	10
1970-01-01	10
1970-04-01	10
1970-07-01	10
1970-10-01	10
1971-01-01	20
1971-04-01	20
1971-07-01	20
1971-10-01	20
1972-01-01	35
1972-04-01	41
1972-07-01	41
1972-10-01	41
1973-01-01	43
1973-04-01	44
1973-07-01	43
1973-10-01	56
1974-01-01	57
1974-04-01	66
1974-07-01	66
1974-10-01	84
1975-01-01	85
1975-04-01	84
1975-07-01	85
1975-10-01	100
1976-01-01	116
1976-04-01	114
1976-07-01	128
1976-10-01	129
1977-01-01	169
1977-04-01	186
1977-07-01	187
1977-10-01	204
1978-01-01	230
1978-04-01	231
1978-07-01	241
1978-10-01	245
1979-01-01	250
1979-04-01	251
1979-07-01	256
1979-10-01	255
1980-01-01	242
1980-04-01	257
1980-07-01	255
1980-10-01	248
1981-01-01	273
1981-04-01	253
1981-07-01	252
1981-10-01	258
1982-01-01	245
1982-04-01	291
1982-07-01	285
1982-10-01	281
1983-01-01	310
1983-04-01	330
1983-07-01	327
1983-10-01	344
1984-01-01	350
1984-04-01	326
1984-07-01	315
1984-10-01	307
1985-01-01	312
1985-04-01	315
1985-07-01	461
1985-10-01	422
1986-01-01	435
1986-04-01	496
1986-07-01	500
1986-10-01	481
1987-01-01	554
1987-04-01	542
1987-07-01	536
1987-10-01	583
1988-01-01	572
1988-04-01	542
1988-07-01	535
1988-10-01	547
1989-01-01	595
1989-04-01	665
1989-07-01	681
1989-10-01	694
1990-01-01	654
1990-04-01	663
1990-07-01	692
1990-10-01	699
1991-01-01	653
1991-04-01	637
1991-07-01	666
1991-10-01	691
1992-01-01	767
1992-04-01	741
1992-07-01	850
1992-10-01	759
1993-01-01	763
1993-04-01	907
1993-07-01	1130
1993-10-01	1061
1994-01-01	1310
1994-04-01	1218
1994-07-01	1316
1994-10-01	1379
1995-01-01	1650
1995-04-01	1683
1995-07-01	1611
1995-10-01	1588
1996-01-01	1667
1996-04-01	1623
1996-07-01	1717
1996-10-01	1668
1997-01-01	1605
1997-04-01	1542
1997-07-01	1493
1997-10-01	1471
1998-01-01	1406
1998-04-01	1389
1998-07-01	1370
1998-10-01	1398
1999-01-01	1340
1999-04-01	1306
1999-07-01	1445
1999-10-01	1365
2000-01-01	1358
2000-04-01	1346
2000-07-01	1384
2000-10-01	1440
2001-01-01	1451
2001-04-01	1439
2001-07-01	1523
2001-10-01	1728
2002-01-01	1542
2002-04-01	1817
2002-07-01	2075
2002-10-01	2085
2003-01-01	2067
2003-04-01	2083
2003-07-01	2102
2003-10-01	2177
2004-01-01	2219
2004-04-01	2147
2004-07-01	2170
2004-10-01	2228
2005-01-01	2078
2005-04-01	1862
2005-07-01	1647
2005-10-01	1431
2006-01-01	1463
2006-04-01	1323
2006-07-01	1269
2006-10-01	2564
2007-01-01	2388
2007-04-01	2353
2007-07-01	2459
2007-10-01	2542
2008-01-01	2710
2008-04-01	2467
2008-07-01	2736
2008-10-01	2192
2009-01-01	2106
2009-04-01	2229
2009-07-01	2079
2009-10-01	2049
2010-01-01	1930
2010-04-01	2272
2010-07-01	2502
2010-10-01	2453
2011-01-01	2595
2011-04-01	4635
2011-07-01	4477
2011-10-01	3089
2012-01-01	3118
2012-04-01	3752
2012-07-01	3768
2012-10-01	3778
2013-01-01	3760
2013-04-01	3771
2013-07-01	3791
2013-10-01	3803
2014-01-01	3604
2014-04-01	3599
2014-07-01	4497
2014-10-01	4445
2015-01-01	4283
2015-04-01	4141
2015-07-01	3341
2015-10-01	3303
2016-01-01	3338
2016-04-01	2278
2016-07-01	2285
2016-10-01	2214
2017-01-01	2231
2017-04-01	2314
2017-07-01	2359
2017-10-01	2888
2018-01-01	2545
2018-04-01	2462