Quarterly Millions of US Dollars
1981-07-01 0
1981-10-01 0
1982-01-01 0
1982-04-01 0
1982-07-01 0
1982-10-01 0
1983-01-01 0
1983-04-01 0
1983-07-01 0
1983-10-01 0
1984-01-01 0
1984-04-01 0
1984-07-01 0
1984-10-01 5
1985-01-01 5
1985-04-01 5
1985-07-01 5
1985-10-01 0
1986-01-01 0
1986-04-01 0
1986-07-01 0
1986-10-01 0
1987-01-01 0
1987-04-01 0
1987-07-01 0
1987-10-01 0
1988-01-01 0
1988-04-01 45
1988-07-01 83
1988-10-01 85
1989-01-01 81
1989-04-01 36
1989-07-01 0
1989-10-01 35
1990-01-01 32
1990-04-01 66
1990-07-01 72
1990-10-01 37
1991-01-01 36
1991-04-01 20
1991-07-01 20
1991-10-01 23
1992-01-01 20
1992-04-01 110
1992-07-01 197
1992-10-01 517
1993-01-01 571
1993-04-01 528
1993-07-01 576
1993-10-01 280
1994-01-01 567
1994-04-01 526
1994-07-01 612
1994-10-01 802
1995-01-01 564
1995-04-01 659
1995-07-01 685
1995-10-01 1239
1996-01-01 1334
1996-04-01 1333
1996-07-01 1183
1996-10-01 881
1997-01-01 904
1997-04-01 1147
1997-07-01 1750
1997-10-01 1799
1998-01-01 2023
1998-04-01 1949
1998-07-01 1669
1998-10-01 1820
1999-01-01 1485
1999-04-01 1374
1999-07-01 1122
1999-10-01 1254
2000-01-01 1663
2000-04-01 1684
2000-07-01 2469
2000-10-01 2374
2001-01-01 2524
2001-04-01 3014
2001-07-01 3040
2001-10-01 3458
2002-01-01 3241
2002-04-01 3343
2002-07-01 3117
2002-10-01 3391
2003-01-01 2886
2003-04-01 3622
2003-07-01 3811
2003-10-01 3864
2004-01-01 4520
2004-04-01 3934
2004-07-01 3639
2004-10-01 3006
2005-01-01 2935
2005-04-01 2854
2005-07-01 3200
2005-10-01 3033
2006-01-01 4260
2006-04-01 4425
2006-07-01 5246
2006-10-01 6088
2007-01-01 6033
2007-04-01 5504
2007-07-01 4543
2007-10-01 3683
2008-01-01 3132
2008-04-01 3028
2008-07-01 2442
2008-10-01 1889
2009-01-01 1732
2009-04-01 2201
2009-07-01 2507
2009-10-01 3039
2010-01-01 3134
2010-04-01 3340
2010-07-01 3567
2010-10-01 5326
2011-01-01 5681
2011-04-01 6776
2011-07-01 6969
2011-10-01 6496
2012-01-01 6842
2012-04-01 7021
2012-07-01 7072
2012-10-01 5266
2013-01-01 5525
2013-04-01 6775
2013-07-01 8621
2013-10-01 9173
2014-01-01 9585
2014-04-01 7385
2014-07-01 5892
2014-10-01 8455
2015-01-01 8138
2015-04-01 9366
2015-07-01 9506
2015-10-01 8844
2016-01-01 8701
2016-04-01 11358
2016-07-01 11836
2016-10-01 10040
2017-01-01 10748
2017-04-01 7398
2017-07-01 6834
2017-10-01 9182
2018-01-01 9883
2018-04-01 9519