Quarterly Millions of US Dollars
1973-10-01 2
1980-04-01 30
1981-04-01 20
1981-10-01 136
1982-04-01 30
1984-04-01 1
1984-07-01 21
1984-10-01 40
1985-01-01 150
1985-07-01 21
1985-10-01 167
1986-01-01 294
1986-04-01 0
1986-10-01 45
1987-01-01 153
1987-10-01 113
1988-04-01 203
1988-07-01 341
1988-10-01 12
1989-04-01 250
1989-10-01 338
1990-01-01 125
1990-07-01 149
1990-10-01 230
1991-01-01 152
1991-04-01 -36
1991-07-01 -37
1991-10-01 -6
1992-01-01 -150
1992-10-01 -181
1993-01-01 -401
1993-04-01 -136
1993-07-01 146
1993-10-01 265
1994-01-01 170
1994-04-01 135
1994-07-01 279
1994-10-01 -431
1995-01-01 -2
1995-07-01 202
1995-10-01 131
1996-01-01 315
1996-04-01 73
1996-07-01 450
1996-10-01 134
1997-01-01 294
1997-04-01 436
1997-07-01 913
1997-10-01 80
1998-04-01 -114
1998-07-01 -208
1999-01-01 50
1999-04-01 -401
1999-07-01 -224
1999-10-01 -405
2000-01-01 -309
2000-04-01 -110
2001-01-01 -190
2001-04-01 -109
2001-07-01 -150
2002-01-01 -150
2002-04-01 100
2002-07-01 -392
2002-10-01 -73
2003-01-01 -220
2003-07-01 100
2003-10-01 99
2004-01-01 798
2004-04-01 500
2004-07-01 273
2004-10-01 848
2005-01-01 752
2005-04-01 525
2005-07-01 1198
2005-10-01 672
2006-01-01 2733
2006-04-01 2215
2006-07-01 805
2006-10-01 1366
2007-01-01 4740
2007-04-01 2121
2007-07-01 1594
2007-10-01 3024
2008-01-01 311
2008-04-01 159
2008-07-01 -99
2008-10-01 618
2009-01-01 -687
2009-04-01 -787
2009-07-01 572
2009-10-01 2203
2010-01-01 -262
2010-04-01 -162
2010-07-01 -1208
2010-10-01 -583
2011-01-01 -933
2011-04-01 -1246
2011-07-01 1261
2011-10-01 -1510
2012-01-01 -2983
2012-04-01 -2171
2012-07-01 -1456
2012-10-01 41
2013-01-01 1170
2013-04-01 1342
2013-07-01 1000
2014-01-01 624
2014-04-01 1932
2014-07-01 2516
2014-10-01 -257
2015-01-01 1039
2015-04-01 2488
2015-07-01 800
2015-10-01 -200
2016-01-01 -307
2016-04-01 -675
2016-07-01 3665
2016-10-01 1006
2017-01-01 1879
2017-04-01 1269
2017-07-01 1020
2017-10-01 2572
2018-01-01 2185
2018-04-01 -1012