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	51
1973-01-01	53
1973-04-01	54
1973-07-01	58
1973-10-01	71
1974-01-01	72
1974-04-01	82
1974-07-01	81
1974-10-01	99
1975-01-01	101
1975-04-01	99
1975-07-01	100
1975-10-01	115
1976-01-01	131
1976-04-01	129
1976-07-01	143
1976-10-01	145
1977-01-01	185
1977-04-01	201
1977-07-01	203
1977-10-01	230
1978-01-01	257
1978-04-01	257
1978-07-01	275
1978-10-01	278
1979-01-01	283
1979-04-01	284
1979-07-01	290
1979-10-01	289
1980-01-01	273
1980-04-01	291
1980-07-01	288
1980-10-01	280
1981-01-01	303
1981-04-01	282
1981-07-01	281
1981-10-01	288
1982-01-01	290
1982-04-01	333
1982-07-01	326
1982-10-01	324
1983-01-01	373
1983-04-01	392
1983-07-01	389
1983-10-01	406
1984-01-01	413
1984-04-01	386
1984-07-01	372
1984-10-01	364
1985-01-01	368
1985-04-01	371
1985-07-01	525
1985-10-01	580
1986-01-01	597
1986-04-01	663
1986-07-01	671
1986-10-01	652
1987-01-01	889
1987-04-01	911
1987-07-01	942
1987-10-01	969
1988-01-01	995
1988-04-01	978
1988-07-01	896
1988-10-01	870
1989-01-01	995
1989-04-01	1047
1989-07-01	1074
1989-10-01	1056
1990-01-01	1016
1990-04-01	1071
1990-07-01	1079
1990-10-01	1101
1991-01-01	1097
1991-04-01	1202
1991-07-01	1197
1991-10-01	1213
1992-01-01	1321
1992-04-01	1300
1992-07-01	1398
1992-10-01	1290
1993-01-01	1353
1993-04-01	1481
1993-07-01	1481
1993-10-01	1437
1994-01-01	1681
1994-04-01	1532
1994-07-01	1683
1994-10-01	1805
1995-01-01	2113
1995-04-01	2149
1995-07-01	2058
1995-10-01	2014
1996-01-01	2087
1996-04-01	2017
1996-07-01	2109
1996-10-01	2083
1997-01-01	2008
1997-04-01	1949
1997-07-01	1895
1997-10-01	1867
1998-01-01	1872
1998-04-01	1852
1998-07-01	1886
1998-10-01	1955
1999-01-01	2035
1999-04-01	2295
1999-07-01	2721
1999-10-01	2837
2000-01-01	3027
2000-04-01	3503
2000-07-01	3620
2000-10-01	4057
2001-01-01	4145
2001-04-01	4017
2001-07-01	4182
2001-10-01	4506
2002-01-01	4331
2002-04-01	5213
2002-07-01	5517
2002-10-01	5440
2003-01-01	5804
2003-04-01	6948
2003-07-01	8006
2003-10-01	10012
2004-01-01	11696
2004-04-01	12677
2004-07-01	16595
2004-10-01	21507
2005-01-01	23995
2005-04-01	27223
2005-07-01	30739
2005-10-01	34406
2006-01-01	37035
2006-04-01	39150
2006-07-01	42321
2006-10-01	48819
2007-01-01	50886
2007-04-01	53348
2007-07-01	54259
2007-10-01	56724
2008-01-01	59958
2008-04-01	61785
2008-07-01	56205
2008-10-01	52005
2009-01-01	47326
2009-04-01	46016
2009-07-01	45177
2009-10-01	41729
2010-01-01	36936
2010-04-01	32982
2010-07-01	35042
2010-10-01	32119
2011-01-01	31951
2011-04-01	32143
2011-07-01	28983
2011-10-01	24865
2012-01-01	22948
2012-04-01	21234
2012-07-01	19513
2012-10-01	18985
2013-01-01	18633
2013-04-01	18654
2013-07-01	18639
2013-10-01	18668
2014-01-01	18549
2014-04-01	18156
2014-07-01	18300
2014-10-01	17632
2015-01-01	16548
2015-04-01	16599
2015-07-01	14817
2015-10-01	15093
2016-01-01	15595
2016-04-01	13038
2016-07-01	13756
2016-10-01	12629
2017-01-01	13524
2017-04-01	14593
2017-07-01	14822
2017-10-01	15485
2018-01-01	15763
2018-04-01	15018