Quarterly Millions of US Dollars
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 34
1977-10-01 40
1978-01-01 43
1978-04-01 43
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 0
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 12
1983-10-01 13
1984-01-01 28
1984-04-01 92
1984-07-01 129
1984-10-01 145
1985-01-01 130
1985-04-01 102
1985-07-01 102
1985-10-01 144
1986-01-01 144
1986-04-01 108
1986-07-01 58
1986-10-01 0
1987-01-01 0
1987-04-01 75
1987-07-01 99
1987-10-01 100
1988-01-01 100
1988-04-01 24
1988-07-01 0
1988-10-01 50
1989-01-01 50
1989-04-01 50
1989-07-01 50
1989-10-01 0
1990-01-01 60
1990-04-01 147
1990-07-01 152
1990-10-01 239
1991-01-01 171
1991-04-01 149
1991-07-01 179
1991-10-01 95
1992-01-01 95
1992-04-01 31
1992-07-01 0
1992-10-01 50
1993-01-01 70
1993-04-01 70
1993-07-01 695
1993-10-01 636
1994-01-01 1095
1994-04-01 1513
1994-07-01 1662
1994-10-01 1477
1995-01-01 1374
1995-04-01 1045
1995-07-01 1283
1995-10-01 1766
1996-01-01 2812
1996-04-01 2284
1996-07-01 1891
1996-10-01 2155
1997-01-01 1811
1997-04-01 2300
1997-07-01 2541
1997-10-01 2964
1998-01-01 2975
1998-04-01 3582
1998-07-01 3554
1998-10-01 3594
1999-01-01 3983
1999-04-01 3289
1999-07-01 2812
1999-10-01 2369
2000-01-01 3387
2000-04-01 3636
2000-07-01 4495
2000-10-01 5479
2001-01-01 5951
2001-04-01 6411
2001-07-01 6873
2001-10-01 5000
2002-01-01 3621
2002-04-01 4108
2002-07-01 6581
2002-10-01 7236
2003-01-01 9444
2003-04-01 9960
2003-07-01 7202
2003-10-01 6537
2004-01-01 3951
2004-04-01 3099
2004-07-01 1955
2004-10-01 2181
2005-01-01 4322
2005-04-01 4320
2005-07-01 4904
2005-10-01 4758
2006-01-01 3814
2006-04-01 4150
2006-07-01 5359
2006-10-01 5662
2007-01-01 5477
2007-04-01 5035
2007-07-01 3634
2007-10-01 4271
2008-01-01 5725
2008-04-01 6839
2008-07-01 7558
2008-10-01 7900
2009-01-01 6910
2009-04-01 6467
2009-07-01 5959
2009-10-01 7534
2010-01-01 10840
2010-04-01 11127
2010-07-01 12887
2010-10-01 12839
2011-01-01 10546
2011-04-01 12472
2011-07-01 11277
2011-10-01 8668
2012-01-01 12599
2012-04-01 13142
2012-07-01 14674
2012-10-01 14980
2013-01-01 13395
2013-04-01 15671
2013-07-01 15443
2013-10-01 15717
2014-01-01 16700
2014-04-01 17389
2014-07-01 17910
2014-10-01 19393
2015-01-01 20690
2015-04-01 16382
2015-07-01 12571
2015-10-01 14616
2016-01-01 21415
2016-04-01 27877
2016-07-01 29446
2016-10-01 28652
2017-01-01 24298
2017-04-01 20984
2017-07-01 20930
2017-10-01 19470
2018-01-01 20320
2018-04-01 23123