Quarterly Millions of US Dollars
1971-01-01 0
1971-04-01 0
1971-07-01 0
1971-10-01 0
1972-01-01 0
1972-04-01 0
1972-07-01 0
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 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 24
1981-04-01 21
1981-07-01 21
1981-10-01 22
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 63
1984-07-01 113
1984-10-01 416
1985-01-01 429
1985-04-01 376
1985-07-01 455
1985-10-01 175
1986-01-01 183
1986-04-01 185
1986-07-01 102
1986-10-01 60
1987-01-01 67
1987-04-01 53
1987-07-01 27
1987-10-01 31
1988-01-01 22
1988-04-01 21
1988-07-01 20
1988-10-01 65
1989-01-01 53
1989-04-01 53
1989-07-01 153
1989-10-01 123
1990-01-01 120
1990-04-01 120
1990-07-01 121
1990-10-01 100
1991-01-01 102
1991-04-01 177
1991-07-01 77
1991-10-01 77
1992-01-01 75
1992-04-01 40
1992-07-01 40
1992-10-01 40
1993-01-01 40
1993-04-01 60
1993-07-01 300
1993-10-01 329
1994-01-01 301
1994-04-01 343
1994-07-01 370
1994-10-01 752
1995-01-01 740
1995-04-01 549
1995-07-01 441
1995-10-01 939
1996-01-01 1320
1996-04-01 1331
1996-07-01 1121
1996-10-01 703
1997-01-01 808
1997-04-01 1124
1997-07-01 694
1997-10-01 665
1998-01-01 404
1998-04-01 150
1998-07-01 338
1998-10-01 1734
1999-01-01 1877
1999-04-01 1813
1999-07-01 2441
1999-10-01 1110
2000-01-01 2108
2000-04-01 2125
2000-07-01 944
2000-10-01 2100
2001-01-01 3184
2001-04-01 3234
2001-07-01 3865
2001-10-01 4783
2002-01-01 3231
2002-04-01 4373
2002-07-01 5252
2002-10-01 3076
2003-01-01 3065
2003-04-01 2999
2003-07-01 1894
2003-10-01 2127
2004-01-01 1648
2004-04-01 1854
2004-07-01 2034
2004-10-01 1931
2005-01-01 2565
2005-04-01 1875
2005-07-01 1408
2005-10-01 3587
2006-01-01 3796
2006-04-01 4275
2006-07-01 5394
2006-10-01 4631
2007-01-01 5755
2007-04-01 5971
2007-07-01 4845
2007-10-01 4167
2008-01-01 2765
2008-04-01 1874
2008-07-01 1899
2008-10-01 2475
2009-01-01 2704
2009-04-01 3138
2009-07-01 3093
2009-10-01 3244
2010-01-01 2823
2010-04-01 3659
2010-07-01 5520
2010-10-01 5019
2011-01-01 6557
2011-04-01 10968
2011-07-01 9177
2011-10-01 10661
2012-01-01 8396
2012-04-01 7236
2012-07-01 6795
2012-10-01 6454
2013-01-01 4258
2013-04-01 9219
2013-07-01 12063
2013-10-01 11473
2014-01-01 13508
2014-04-01 7829
2014-07-01 6623
2014-10-01 7865
2015-01-01 7899
2015-04-01 12637
2015-07-01 12749
2015-10-01 14067
2016-01-01 21280
2016-04-01 20484
2016-07-01 19705
2016-10-01 18345
2017-01-01 14178
2017-04-01 11824
2017-07-01 13042
2017-10-01 11951
2018-01-01 14518
2018-04-01 13640