Quarterly Millions of US Dollars
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 21
1982-04-01 20
1982-07-01 20
1982-10-01 21
1983-01-01 30
1983-04-01 110
1983-07-01 130
1983-10-01 130
1984-01-01 100
1984-04-01 20
1984-07-01 0
1984-10-01 4
1985-01-01 4
1985-04-01 44
1985-07-01 92
1985-10-01 95
1986-01-01 106
1986-04-01 55
1986-07-01 0
1986-10-01 0
1987-01-01 0
1987-04-01 68
1987-07-01 68
1987-10-01 82
1988-01-01 81
1988-04-01 75
1988-07-01 74
1988-10-01 80
1989-01-01 220
1989-04-01 445
1989-07-01 517
1989-10-01 515
1990-01-01 435
1990-04-01 141
1990-07-01 251
1990-10-01 328
1991-01-01 238
1991-04-01 241
1991-07-01 75
1991-10-01 0
1992-01-01 30
1992-04-01 32
1992-07-01 175
1992-10-01 156
1993-01-01 211
1993-04-01 213
1993-07-01 175
1993-10-01 189
1994-01-01 267
1994-04-01 272
1994-07-01 437
1994-10-01 415
1995-01-01 454
1995-04-01 453
1995-07-01 471
1995-10-01 514
1996-01-01 969
1996-04-01 966
1996-07-01 902
1996-10-01 768
1997-01-01 474
1997-04-01 490
1997-07-01 492
1997-10-01 463
1998-01-01 557
1998-04-01 734
1998-07-01 1179
1998-10-01 1048
1999-01-01 955
1999-04-01 957
1999-07-01 633
1999-10-01 939
2000-01-01 1040
2000-04-01 1508
2000-07-01 1815
2000-10-01 2445
2001-01-01 2464
2001-04-01 2762
2001-07-01 2337
2001-10-01 1458
2002-01-01 1079
2002-04-01 1124
2002-07-01 2224
2002-10-01 2549
2003-01-01 2882
2003-04-01 2715
2003-07-01 2246
2003-10-01 1894
2004-01-01 1230
2004-04-01 892
2004-07-01 1350
2004-10-01 1669
2005-01-01 1648
2005-04-01 2176
2005-07-01 1130
2005-10-01 1694
2006-01-01 1981
2006-04-01 3745
2006-07-01 4262
2006-10-01 3155
2007-01-01 2497
2007-04-01 1577
2007-07-01 1211
2007-10-01 1408
2008-01-01 1527
2008-04-01 736
2008-07-01 961
2008-10-01 571
2009-01-01 836
2009-04-01 1178
2009-07-01 920
2009-10-01 1056
2010-01-01 606
2010-04-01 696
2010-07-01 1124
2010-10-01 861
2011-01-01 856
2011-04-01 410
2011-07-01 472
2011-10-01 722
2012-01-01 1194
2012-04-01 1587
2012-07-01 1131
2012-10-01 1322
2013-01-01 827
2013-04-01 465
2013-07-01 1090
2013-10-01 725
2014-01-01 925
2014-04-01 1674
2014-07-01 1042
2014-10-01 941
2015-01-01 890
2015-04-01 206
2015-07-01 506
2015-10-01 500
2016-01-01 400
2016-04-01 1000
2016-07-01 977
2016-10-01 3039
2017-01-01 3181
2017-04-01 2660
2017-07-01 3425
2017-10-01 1327
2018-01-01 1322
2018-04-01 1290