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 0
1976-04-01 0
1976-07-01 0
1976-10-01 10
1977-01-01 10
1977-04-01 10
1977-07-01 10
1977-10-01 0
1978-01-01 16
1978-04-01 59
1978-07-01 71
1978-10-01 232
1979-01-01 445
1979-04-01 548
1979-07-01 785
1979-10-01 865
1980-01-01 832
1980-04-01 1156
1980-07-01 998
1980-10-01 873
1981-01-01 951
1981-04-01 761
1981-07-01 892
1981-10-01 999
1982-01-01 1026
1982-04-01 1109
1982-07-01 1119
1982-10-01 1314
1983-01-01 1450
1983-04-01 2245
1983-07-01 2427
1983-10-01 2326
1984-01-01 2499
1984-04-01 1787
1984-07-01 1680
1984-10-01 2050
1985-01-01 2029
1985-04-01 2097
1985-07-01 2701
1985-10-01 2648
1986-01-01 3130
1986-04-01 3643
1986-07-01 4081
1986-10-01 5194
1987-01-01 6646
1987-04-01 7532
1987-07-01 7977
1987-10-01 9831
1988-01-01 9533
1988-04-01 8533
1988-07-01 10074
1988-10-01 10602
1989-01-01 10386
1989-04-01 10430
1989-07-01 10392
1989-10-01 11761
1990-01-01 12566
1990-04-01 15277
1990-07-01 18012
1990-10-01 19887
1991-01-01 22330
1991-04-01 27447
1991-07-01 39722
1991-10-01 45521
1992-01-01 60039
1992-04-01 78527
1992-07-01 86156
1992-10-01 88484
1993-01-01 76081
1993-04-01 57379
1993-07-01 48000
1993-10-01 43569
1994-01-01 41651
1994-04-01 41560
1994-07-01 42300
1994-10-01 37536
1995-01-01 39568
1995-04-01 38184
1995-07-01 34222
1995-10-01 38736
1996-01-01 40171
1996-04-01 43277
1996-07-01 46118
1996-10-01 44432
1997-01-01 48441
1997-04-01 49630
1997-07-01 44106
1997-10-01 35031
1998-01-01 24859
1998-04-01 18379
1998-07-01 16286
1998-10-01 22509
1999-01-01 25168
1999-04-01 26146
1999-07-01 28124
1999-10-01 24873
2000-01-01 18854
2000-04-01 16568
2000-07-01 13788
2000-10-01 13416
2001-01-01 10616
2001-04-01 8867
2001-07-01 11018
2001-10-01 10035
2002-01-01 12216
2002-04-01 11926
2002-07-01 12199
2002-10-01 10444
2003-01-01 9306
2003-04-01 10057
2003-07-01 9931
2003-10-01 9685
2004-01-01 7228
2004-04-01 7929
2004-07-01 5424
2004-10-01 5386
2005-01-01 6022
2005-04-01 6733
2005-07-01 8653
2005-10-01 10409
2006-01-01 13748
2006-04-01 13643
2006-07-01 12777
2006-10-01 11178
2007-01-01 8700
2007-04-01 7635
2007-07-01 5509
2007-10-01 8692
2008-01-01 9060
2008-04-01 14072
2008-07-01 15158
2008-10-01 15285
2009-01-01 14082
2009-04-01 10712
2009-07-01 10418
2009-10-01 8717
2010-01-01 8252
2010-04-01 11717
2010-07-01 15156
2010-10-01 15553
2011-01-01 14748
2011-04-01 9182
2011-07-01 6228
2011-10-01 4782
2012-01-01 4799
2012-04-01 4959
2012-07-01 5441
2012-10-01 7036
2013-01-01 8170
2013-04-01 7902
2013-07-01 7382
2013-10-01 6289
2014-01-01 7815
2014-04-01 8172
2014-07-01 10028
2014-10-01 9616
2015-01-01 6447
2015-04-01 5873
2015-07-01 4785
2015-10-01 4292
2016-01-01 6034
2016-04-01 6326
2016-07-01 7609
2016-10-01 6719
2017-01-01 5025
2017-04-01 8203
2017-07-01 10256
2017-10-01 11743
2018-01-01 12861
2018-04-01 11436