Quarter	Millions of US Dollars
1974-04-01	0
1974-07-01	0
1974-10-01	0
1975-01-01	0
1975-04-01	0
1975-07-01	0
1975-10-01	0
1976-01-01	0
1976-04-01	0
1976-07-01	0
1976-10-01	0
1977-01-01	0
1977-04-01	0
1977-07-01	0
1977-10-01	0
1978-01-01	0
1978-04-01	18
1978-07-01	18
1978-10-01	18
1979-01-01	18
1979-04-01	0
1979-07-01	0
1979-10-01	0
1980-01-01	0
1980-04-01	0
1980-07-01	0
1980-10-01	0
1981-01-01	0
1981-04-01	0
1981-07-01	0
1981-10-01	0
1982-01-01	17
1982-04-01	17
1982-07-01	17
1982-10-01	17
1983-01-01	21
1983-04-01	21
1983-07-01	59
1983-10-01	58
1984-01-01	77
1984-04-01	72
1984-07-01	33
1984-10-01	55
1985-01-01	36
1985-04-01	36
1985-07-01	141
1985-10-01	182
1986-01-01	175
1986-04-01	244
1986-07-01	152
1986-10-01	63
1987-01-01	151
1987-04-01	82
1987-07-01	82
1987-10-01	99
1988-01-01	26
1988-04-01	23
1988-07-01	22
1988-10-01	23
1989-01-01	0
1989-04-01	0
1989-07-01	86
1989-10-01	84
1990-01-01	76
1990-04-01	79
1990-07-01	0
1990-10-01	111
1991-01-01	107
1991-04-01	109
1991-07-01	113
1991-10-01	0
1992-01-01	0
1992-04-01	0
1992-07-01	0
1992-10-01	0
1993-01-01	0
1993-04-01	0
1993-07-01	0
1993-10-01	0
1994-01-01	0
1994-04-01	0
1994-07-01	0
1994-10-01	0
1995-01-01	150
1995-04-01	150
1995-07-01	150
1995-10-01	150
1996-01-01	0
1996-04-01	0
1996-07-01	0
1996-10-01	28
1997-01-01	85
1997-04-01	113
1997-07-01	171
1997-10-01	171
1998-01-01	171
1998-04-01	171
1998-07-01	171
1998-10-01	1120
1999-01-01	1120
1999-04-01	1410
1999-07-01	1410
1999-10-01	503
2000-01-01	503
2000-04-01	256
2000-07-01	256
2000-10-01	256
2001-01-01	335
2001-04-01	1114
2001-07-01	1117
2001-10-01	1369
2002-01-01	1293
2002-04-01	516
2002-07-01	763
2002-10-01	509
2003-01-01	1640
2003-04-01	1872
2003-07-01	2147
2003-10-01	2191
2004-01-01	1216
2004-04-01	978
2004-07-01	690
2004-10-01	908
2005-01-01	664
2005-04-01	1065
2005-07-01	751
2005-10-01	1757
2006-01-01	1772
2006-04-01	1447
2006-07-01	1743
2006-10-01	424
2007-01-01	424
2007-04-01	1038
2007-07-01	740
2007-10-01	740
2008-01-01	1676
2008-04-01	936
2008-07-01	936
2008-10-01	936
2009-01-01	1411
2009-04-01	1464
2009-07-01	1497
2009-10-01	2041
2010-01-01	2059
2010-04-01	2059
2010-07-01	2059
2010-10-01	2115
2011-01-01	817
2011-04-01	834
2011-07-01	863
2011-10-01	213
2012-01-01	1000
2012-04-01	1000
2012-07-01	1249
2012-10-01	1249
2013-01-01	1949
2013-04-01	1949
2013-07-01	1756
2013-10-01	1756
2014-01-01	1106
2014-04-01	1106
2014-07-01	1050
2014-10-01	1050
2015-01-01	1237
2015-04-01	1259
2015-07-01	1259
2015-10-01	1714
2016-01-01	1374
2016-04-01	1374
2016-07-01	1374
2016-10-01	904
2017-01-01	0
2017-04-01	0
2017-07-01	0
2017-10-01	0
2018-01-01	1100
2018-04-01	2600