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 10
1976-04-01 10
1976-07-01 10
1976-10-01 10
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 14
1978-10-01 68
1979-01-01 186
1979-04-01 253
1979-07-01 424
1979-10-01 823
1980-01-01 973
1980-04-01 1310
1980-07-01 1271
1980-10-01 926
1981-01-01 1117
1981-04-01 1173
1981-07-01 1147
1981-10-01 1438
1982-01-01 1347
1982-04-01 1390
1982-07-01 1287
1982-10-01 1330
1983-01-01 982
1983-04-01 811
1983-07-01 948
1983-10-01 658
1984-01-01 782
1984-04-01 613
1984-07-01 512
1984-10-01 1563
1985-01-01 1556
1985-04-01 1481
1985-07-01 1802
1985-10-01 985
1986-01-01 1171
1986-04-01 1649
1986-07-01 2062
1986-10-01 2107
1987-01-01 2384
1987-04-01 2060
1987-07-01 1602
1987-10-01 1812
1988-01-01 1276
1988-04-01 1086
1988-07-01 1398
1988-10-01 1044
1989-01-01 1552
1989-04-01 1853
1989-07-01 2066
1989-10-01 2705
1990-01-01 2769
1990-04-01 2941
1990-07-01 3186
1990-10-01 3866
1991-01-01 4359
1991-04-01 4617
1991-07-01 4518
1991-10-01 4336
1992-01-01 3741
1992-04-01 5071
1992-07-01 5232
1992-10-01 4551
1993-01-01 4205
1993-04-01 2919
1993-07-01 2938
1993-10-01 2761
1994-01-01 2679
1994-04-01 3289
1994-07-01 3470
1994-10-01 3005
1995-01-01 3705
1995-04-01 3137
1995-07-01 4313
1995-10-01 4613
1996-01-01 6816
1996-04-01 7716
1996-07-01 5524
1996-10-01 4681
1997-01-01 4923
1997-04-01 5374
1997-07-01 5143
1997-10-01 4360
1998-01-01 5071
1998-04-01 4322
1998-07-01 5371
1998-10-01 4702
1999-01-01 5018
1999-04-01 4733
1999-07-01 6358
1999-10-01 4401
2000-01-01 6186
2000-04-01 7468
2000-07-01 8445
2000-10-01 8042
2001-01-01 8192
2001-04-01 7156
2001-07-01 6702
2001-10-01 7105
2002-01-01 7368
2002-04-01 10450
2002-07-01 9193
2002-10-01 8498
2003-01-01 8876
2003-04-01 7794
2003-07-01 8358
2003-10-01 10263
2004-01-01 10222
2004-04-01 10341
2004-07-01 10075
2004-10-01 12821
2005-01-01 11204
2005-04-01 12264
2005-07-01 11002
2005-10-01 11834
2006-01-01 15428
2006-04-01 18619
2006-07-01 20109
2006-10-01 19936
2007-01-01 22046
2007-04-01 21474
2007-07-01 23403
2007-10-01 29470
2008-01-01 37844
2008-04-01 34271
2008-07-01 32351
2008-10-01 35102
2009-01-01 35060
2009-04-01 34090
2009-07-01 37581
2009-10-01 32813
2010-01-01 31077
2010-04-01 33972
2010-07-01 32340
2010-10-01 33221
2011-01-01 38948
2011-04-01 35363
2011-07-01 34890
2011-10-01 33811
2012-01-01 42367
2012-04-01 44987
2012-07-01 46433
2012-10-01 42362
2013-01-01 35341
2013-04-01 34986
2013-07-01 35204
2013-10-01 41816
2014-01-01 40642
2014-04-01 42161
2014-07-01 43296
2014-10-01 37893
2015-01-01 40723
2015-04-01 34225
2015-07-01 33293
2015-10-01 36620
2016-01-01 32450
2016-04-01 38787
2016-07-01 42223
2016-10-01 34426
2017-01-01 38915
2017-04-01 37141
2017-07-01 30824
2017-10-01 29927
2018-01-01 30532
2018-04-01 27836