Quarterly Millions of US Dollars
1972-10-01 0
1973-01-01 0
1973-04-01 0
1973-07-01 0
1973-10-01 0
1974-01-01 0
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 12
1981-01-01 12
1981-04-01 12
1981-07-01 12
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 83
1985-01-01 63
1985-04-01 64
1985-07-01 170
1985-10-01 182
1986-01-01 175
1986-04-01 244
1986-07-01 165
1986-10-01 75
1987-01-01 176
1987-04-01 107
1987-07-01 127
1987-10-01 194
1988-01-01 141
1988-04-01 138
1988-07-01 175
1988-10-01 126
1989-01-01 70
1989-04-01 96
1989-07-01 112
1989-10-01 109
1990-01-01 102
1990-04-01 79
1990-07-01 0
1990-10-01 111
1991-01-01 314
1991-04-01 316
1991-07-01 320
1991-10-01 207
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 30
1993-10-01 45
1994-01-01 30
1994-04-01 138
1994-07-01 109
1994-10-01 111
1995-01-01 276
1995-04-01 207
1995-07-01 343
1995-10-01 489
1996-01-01 398
1996-04-01 397
1996-07-01 262
1996-10-01 405
1997-01-01 403
1997-04-01 558
1997-07-01 1290
1997-10-01 1093
1998-01-01 1933
1998-04-01 1907
1998-07-01 1487
1998-10-01 2297
1999-01-01 1659
1999-04-01 2155
1999-07-01 2288
1999-10-01 1292
2000-01-01 1894
2000-04-01 1500
2000-07-01 1475
2000-10-01 1639
2001-01-01 1147
2001-04-01 2303
2001-07-01 2475
2001-10-01 2620
2002-01-01 2448
2002-04-01 1977
2002-07-01 1695
2002-10-01 1425
2003-01-01 2660
2003-04-01 2972
2003-07-01 3150
2003-10-01 3064
2004-01-01 1705
2004-04-01 1325
2004-07-01 947
2004-10-01 1915
2005-01-01 1671
2005-04-01 2247
2005-07-01 2043
2005-10-01 2395
2006-01-01 2614
2006-04-01 2119
2006-07-01 2280
2006-10-01 1186
2007-01-01 1171
2007-04-01 2482
2007-07-01 2283
2007-10-01 2157
2008-01-01 2552
2008-04-01 1696
2008-07-01 1575
2008-10-01 1278
2009-01-01 2336
2009-04-01 2444
2009-07-01 2762
2009-10-01 3307
2010-01-01 2832
2010-04-01 2606
2010-07-01 2609
2010-10-01 3018
2011-01-01 1870
2011-04-01 1889
2011-07-01 1616
2011-10-01 720
2012-01-01 2329
2012-04-01 2328
2012-07-01 2829
2012-10-01 2721
2013-01-01 2299
2013-04-01 2899
2013-07-01 2856
2013-10-01 2856
2014-01-01 2456
2014-04-01 1856
2014-07-01 1705
2014-10-01 1805
2015-01-01 2042
2015-04-01 2712
2015-07-01 2309
2015-10-01 3282
2016-01-01 4571
2016-04-01 3921
2016-07-01 3921
2016-10-01 4411
2017-01-01 1573
2017-04-01 1923
2017-07-01 2768
2017-10-01 1400
2018-01-01 2500
2018-04-01 4948