Quarterly Millions of US Dollars
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 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 0
1983-10-01 0
1984-01-01 0
1984-04-01 0
1984-07-01 0
1984-10-01 0
1985-01-01 0
1985-04-01 23
1985-07-01 24
1985-10-01 24
1986-01-01 24
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 0
1988-07-01 50
1988-10-01 50
1989-01-01 50
1989-04-01 50
1989-07-01 0
1989-10-01 0
1990-01-01 0
1990-04-01 0
1990-07-01 0
1990-10-01 0
1991-01-01 73
1991-04-01 120
1991-07-01 128
1991-10-01 330
1992-01-01 231
1992-04-01 290
1992-07-01 309
1992-10-01 179
1993-01-01 399
1993-04-01 303
1993-07-01 308
1993-10-01 216
1994-01-01 293
1994-04-01 783
1994-07-01 963
1994-10-01 1614
1995-01-01 1473
1995-04-01 1496
1995-07-01 1880
1995-10-01 2043
1996-01-01 2629
1996-04-01 2364
1996-07-01 1920
1996-10-01 1805
1997-01-01 1364
1997-04-01 1512
1997-07-01 1940
1997-10-01 3328
1998-01-01 3067
1998-04-01 3592
1998-07-01 3449
1998-10-01 1612
1999-01-01 2647
1999-04-01 1751
1999-07-01 1845
1999-10-01 2230
2000-01-01 1012
2000-04-01 1686
2000-07-01 1201
2000-10-01 2179
2001-01-01 2432
2001-04-01 3046
2001-07-01 3337
2001-10-01 3236
2002-01-01 3785
2002-04-01 4097
2002-07-01 4567
2002-10-01 4476
2003-01-01 5603
2003-04-01 4459
2003-07-01 4204
2003-10-01 4171
2004-01-01 3186
2004-04-01 4055
2004-07-01 4682
2004-10-01 4202
2005-01-01 2290
2005-04-01 1792
2005-07-01 704
2005-10-01 2986
2006-01-01 2527
2006-04-01 2907
2006-07-01 3649
2006-10-01 1738
2007-01-01 4865
2007-04-01 3875
2007-07-01 3359
2007-10-01 4236
2008-01-01 1050
2008-04-01 2300
2008-07-01 3308
2008-10-01 2985
2009-01-01 4279
2009-04-01 4831
2009-07-01 3684
2009-10-01 3111
2010-01-01 2791
2010-04-01 2148
2010-07-01 2566
2010-10-01 3044
2011-01-01 4263
2011-04-01 4085
2011-07-01 5381
2011-10-01 5494
2012-01-01 4871
2012-04-01 4994
2012-07-01 3485
2012-10-01 3930
2013-01-01 5650
2013-04-01 5525
2013-07-01 6284
2013-10-01 5516
2014-01-01 5135
2014-04-01 6233
2014-07-01 8225
2014-10-01 9552
2015-01-01 8054
2015-04-01 8110
2015-07-01 8725
2015-10-01 7796
2016-01-01 7522
2016-04-01 7601
2016-07-01 8684
2016-10-01 8150
2017-01-01 9229
2017-04-01 13986
2017-07-01 10605
2017-10-01 14717
2018-01-01 13200
2018-04-01 12947