Quarterly Millions of US Dollars
1977-01-01 0
1977-04-01 0
1977-07-01 0
1977-10-01 0
1978-01-01 0
1978-04-01 0
1978-07-01 0
1978-10-01 0
1979-01-01 0
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 61
1981-07-01 63
1981-10-01 70
1982-01-01 174
1982-04-01 109
1982-07-01 109
1982-10-01 109
1983-01-01 0
1983-04-01 79
1983-07-01 76
1983-10-01 73
1984-01-01 77
1984-04-01 0
1984-07-01 0
1984-10-01 24
1985-01-01 223
1985-04-01 224
1985-07-01 603
1985-10-01 1235
1986-01-01 1297
1986-04-01 1487
1986-07-01 1125
1986-10-01 449
1987-01-01 256
1987-04-01 165
1987-07-01 164
1987-10-01 287
1988-01-01 219
1988-04-01 155
1988-07-01 257
1988-10-01 337
1989-01-01 314
1989-04-01 240
1989-07-01 143
1989-10-01 3
1990-01-01 56
1990-04-01 59
1990-07-01 64
1990-10-01 124
1991-01-01 51
1991-04-01 48
1991-07-01 52
1991-10-01 0
1992-01-01 0
1992-04-01 143
1992-07-01 276
1992-10-01 265
1993-01-01 157
1993-04-01 261
1993-07-01 1177
1993-10-01 1415
1994-01-01 1550
1994-04-01 911
1994-07-01 997
1994-10-01 638
1995-01-01 1398
1995-04-01 1315
1995-07-01 1106
1995-10-01 1153
1996-01-01 591
1996-04-01 879
1996-07-01 282
1996-10-01 1028
1997-01-01 1183
1997-04-01 1042
1997-07-01 1074
1997-10-01 1426
1998-01-01 2749
1998-04-01 2776
1998-07-01 4550
1998-10-01 3964
1999-01-01 3644
1999-04-01 3537
1999-07-01 2175
1999-10-01 2141
2000-01-01 577
2000-04-01 1493
2000-07-01 1128
2000-10-01 1742
2001-01-01 2641
2001-04-01 2995
2001-07-01 3334
2001-10-01 2911
2002-01-01 3755
2002-04-01 3081
2002-07-01 2931
2002-10-01 3553
2003-01-01 1398
2003-04-01 2299
2003-07-01 3830
2003-10-01 5393
2004-01-01 7233
2004-04-01 6296
2004-07-01 7163
2004-10-01 5832
2005-01-01 3714
2005-04-01 4086
2005-07-01 4729
2005-10-01 4311
2006-01-01 5830
2006-04-01 5833
2006-07-01 2668
2006-10-01 3371
2007-01-01 3040
2007-04-01 4501
2007-07-01 6102
2007-10-01 5945
2008-01-01 7903
2008-04-01 7455
2008-07-01 5930
2008-10-01 6837
2009-01-01 5481
2009-04-01 5653
2009-07-01 6992
2009-10-01 6203
2010-01-01 6618
2010-04-01 5357
2010-07-01 6506
2010-10-01 4173
2011-01-01 6130
2011-04-01 7276
2011-07-01 10755
2011-10-01 10281
2012-01-01 8666
2012-04-01 13877
2012-07-01 14176
2012-10-01 15010
2013-01-01 14694
2013-04-01 8386
2013-07-01 2102
2013-10-01 2630
2014-01-01 10523
2014-04-01 12179
2014-07-01 13987
2014-10-01 13035
2015-01-01 5020
2015-04-01 3782
2015-07-01 1151
2015-10-01 2513
2016-01-01 8240
2016-04-01 8467
2016-07-01 13900
2016-10-01 11666
2017-01-01 11597
2017-04-01 12894
2017-07-01 13125
2017-10-01 13261
2018-01-01 8023
2018-04-01 6029