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 83
1979-01-01 134
1979-04-01 201
1979-07-01 368
1979-10-01 751
1980-01-01 973
1980-04-01 1310
1980-07-01 1271
1980-10-01 886
1981-01-01 1077
1981-04-01 1133
1981-07-01 1107
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 1535
1985-04-01 1460
1985-07-01 1785
1985-10-01 1009
1986-01-01 1151
1986-04-01 1649
1986-07-01 2062
1986-10-01 2067
1987-01-01 2369
1987-04-01 2026
1987-07-01 1535
1987-10-01 1719
1988-01-01 1221
1988-04-01 1028
1988-07-01 1267
1988-10-01 936
1989-01-01 1425
1989-04-01 1726
1989-07-01 2023
1989-10-01 2316
1990-01-01 2638
1990-04-01 2799
1990-07-01 3067
1990-10-01 3747
1991-01-01 3743
1991-04-01 3982
1991-07-01 3829
1991-10-01 3600
1992-01-01 3529
1992-04-01 4517
1992-07-01 4638
1992-10-01 3946
1993-01-01 3748
1993-04-01 2749
1993-07-01 2651
1993-10-01 2544
1994-01-01 2427
1994-04-01 3046
1994-07-01 3386
1994-10-01 2906
1995-01-01 3630
1995-04-01 3037
1995-07-01 4213
1995-10-01 4513
1996-01-01 6686
1996-04-01 7686
1996-07-01 5494
1996-10-01 4451
1997-01-01 4723
1997-04-01 5174
1997-07-01 4943
1997-10-01 4360
1998-01-01 4911
1998-04-01 4210
1998-07-01 4900
1998-10-01 4347
1999-01-01 4355
1999-04-01 4222
1999-07-01 5886
1999-10-01 3978
2000-01-01 6070
2000-04-01 7393
2000-07-01 7987
2000-10-01 7283
2001-01-01 7251
2001-04-01 6218
2001-07-01 6237
2001-10-01 6093
2002-01-01 7025
2002-04-01 10024
2002-07-01 8693
2002-10-01 8048
2003-01-01 8386
2003-04-01 7694
2003-07-01 7610
2003-10-01 9463
2004-01-01 9076
2004-04-01 8826
2004-07-01 9068
2004-10-01 11769
2005-01-01 10770
2005-04-01 12001
2005-07-01 10736
2005-10-01 10688
2006-01-01 14333
2006-04-01 17741
2006-07-01 19274
2006-10-01 20098
2007-01-01 22292
2007-04-01 21389
2007-07-01 23365
2007-10-01 29655
2008-01-01 37966
2008-04-01 34567
2008-07-01 32885
2008-10-01 36026
2009-01-01 35520
2009-04-01 34452
2009-07-01 37701
2009-10-01 32862
2010-01-01 34357
2010-04-01 35449
2010-07-01 35137
2010-10-01 33752
2011-01-01 39409
2011-04-01 36025
2011-07-01 34849
2011-10-01 36992
2012-01-01 43652
2012-04-01 44951
2012-07-01 48660
2012-10-01 42855
2013-01-01 36356
2013-04-01 35929
2013-07-01 36315
2013-10-01 43490
2014-01-01 42254
2014-04-01 42541
2014-07-01 42962
2014-10-01 37554
2015-01-01 40466
2015-04-01 33464
2015-07-01 32546
2015-10-01 35848
2016-01-01 32262
2016-04-01 38852
2016-07-01 40941
2016-10-01 33490
2017-01-01 37520
2017-04-01 34766
2017-07-01 29272
2017-10-01 29086
2018-01-01 28706
2018-04-01 27132