Quarterly Millions of US Dollars
1978-07-01 105
1978-10-01 107
1979-01-01 138
1979-04-01 137
1979-07-01 166
1979-10-01 164
1980-01-01 152
1980-04-01 168
1980-07-01 212
1980-10-01 204
1981-01-01 192
1981-04-01 220
1981-07-01 221
1981-10-01 232
1982-01-01 214
1982-04-01 406
1982-07-01 437
1982-10-01 535
1983-01-01 566
1983-04-01 560
1983-07-01 852
1983-10-01 850
1984-01-01 860
1984-04-01 842
1984-07-01 793
1984-10-01 785
1985-01-01 787
1985-04-01 789
1985-07-01 791
1985-10-01 767
1986-01-01 1094
1986-04-01 1118
1986-07-01 1138
1986-10-01 1133
1987-01-01 1163
1987-04-01 1160
1987-07-01 1161
1987-10-01 1229
1988-01-01 1218
1988-04-01 1187
1988-07-01 1108
1988-10-01 1299
1989-01-01 1234
1989-04-01 1210
1989-07-01 1089
1989-10-01 1109
1990-01-01 1102
1990-04-01 1108
1990-07-01 1130
1990-10-01 1061
1991-01-01 1025
1991-04-01 949
1991-07-01 961
1991-10-01 984
1992-01-01 964
1992-04-01 805
1992-07-01 826
1992-10-01 791
1993-01-01 736
1993-04-01 728
1993-07-01 735
1993-10-01 300
1994-01-01 300
1994-04-01 300
1994-07-01 300
1994-10-01 300
1995-01-01 300
1995-04-01 300
1995-07-01 300
1995-10-01 300
1996-01-01 300
1996-04-01 300
1996-07-01 700
1996-10-01 700
1997-01-01 700
1997-04-01 700
1997-07-01 700
1997-10-01 700
1998-01-01 700
1998-04-01 700
1998-07-01 700
1998-10-01 700
1999-01-01 700
1999-04-01 700
1999-07-01 700
1999-10-01 700
2000-01-01 700
2000-04-01 700
2000-07-01 700
2000-10-01 700
2001-01-01 400
2001-04-01 400
2001-07-01 400
2001-10-01 400
2002-01-01 400
2002-04-01 400
2002-07-01 400
2002-10-01 400
2003-01-01 400
2003-04-01 400
2003-07-01 400
2003-10-01 400
2004-01-01 1400
2004-04-01 1400
2004-07-01 1400
2004-10-01 1400
2005-01-01 1400
2005-04-01 2400
2005-07-01 2400
2005-10-01 3900
2006-01-01 5900
2006-04-01 5900
2006-07-01 5500
2006-10-01 5500
2007-01-01 7000
2007-04-01 7000
2007-07-01 7000
2007-10-01 7000
2008-01-01 9000
2008-04-01 11200
2008-07-01 11200
2008-10-01 11200
2009-01-01 16200
2009-04-01 16850
2009-07-01 17241
2009-10-01 17229
2010-01-01 19225
2010-04-01 19245
2010-07-01 19270
2010-10-01 20018
2011-01-01 19998
2011-04-01 22531
2011-07-01 22586
2011-10-01 22577
2012-01-01 26008
2012-04-01 28544
2012-07-01 28574
2012-10-01 29150
2013-01-01 28992
2013-04-01 31917
2013-07-01 32938
2013-10-01 32827
2014-01-01 35551
2014-04-01 33929
2014-07-01 36369
2014-10-01 36234
2015-01-01 41972
2015-04-01 41038
2015-07-01 44566
2015-10-01 47924
2016-01-01 47410
2016-04-01 56525
2016-07-01 55295
2016-10-01 57678
2017-01-01 56998
2017-04-01 58701
2017-07-01 66551
2017-10-01 69792
2018-01-01 68593
2018-04-01 70669