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 0
1977-01-01 0
1977-04-01 0
1977-07-01 0
1977-10-01 0
1978-01-01 0
1978-04-01 18
1978-07-01 18
1978-10-01 53
1979-01-01 128
1979-04-01 150
1979-07-01 162
1979-10-01 152
1980-01-01 161
1980-04-01 178
1980-07-01 166
1980-10-01 138
1981-01-01 137
1981-04-01 456
1981-07-01 461
1981-10-01 493
1982-01-01 856
1982-04-01 530
1982-07-01 522
1982-10-01 694
1983-01-01 395
1983-04-01 570
1983-07-01 779
1983-10-01 716
1984-01-01 776
1984-04-01 663
1984-07-01 593
1984-10-01 1563
1985-01-01 1559
1985-04-01 1689
1985-07-01 1857
1985-10-01 1094
1986-01-01 1375
1986-04-01 1353
1986-07-01 1418
1986-10-01 1370
1987-01-01 1223
1987-04-01 1755
1987-07-01 1918
1987-10-01 2226
1988-01-01 2548
1988-04-01 2010
1988-07-01 1907
1988-10-01 2106
1989-01-01 1627
1989-04-01 1948
1989-07-01 2119
1989-10-01 2095
1990-01-01 2031
1990-04-01 1544
1990-07-01 1247
1990-10-01 1081
1991-01-01 982
1991-04-01 954
1991-07-01 874
1991-10-01 2168
1992-01-01 2184
1992-04-01 2125
1992-07-01 3763
1992-10-01 3214
1993-01-01 2918
1993-04-01 3882
1993-07-01 3522
1993-10-01 3221
1994-01-01 3803
1994-04-01 4132
1994-07-01 4708
1994-10-01 4276
1995-01-01 4723
1995-04-01 6353
1995-07-01 6647
1995-10-01 7579
1996-01-01 7810
1996-04-01 6238
1996-07-01 12499
1996-10-01 13528
1997-01-01 12891
1997-04-01 13107
1997-07-01 7965
1997-10-01 31760
1998-01-01 30795
1998-04-01 32096
1998-07-01 31477
1998-10-01 8777
1999-01-01 11562
1999-04-01 18381
1999-07-01 19594
1999-10-01 20706
2000-01-01 22035
2000-04-01 52803
2000-07-01 55511
2000-10-01 64659
2001-01-01 63142
2001-04-01 30403
2001-07-01 29118
2001-10-01 22409
2002-01-01 33373
2002-04-01 40911
2002-07-01 46153
2002-10-01 46049
2003-01-01 40512
2003-04-01 34455
2003-07-01 34185
2003-10-01 32899
2004-01-01 29497
2004-04-01 65161
2004-07-01 72389
2004-10-01 77586
2005-01-01 77416
2005-04-01 51563
2005-07-01 41805
2005-10-01 43014
2006-01-01 42623
2006-04-01 28700
2006-07-01 31016
2006-10-01 25791
2007-01-01 32005
2007-04-01 32747
2007-07-01 28599
2007-10-01 35954
2008-01-01 32604
2008-04-01 37297
2008-07-01 37021
2008-10-01 29619
2009-01-01 32219
2009-04-01 23896
2009-07-01 27267
2009-10-01 27887
2010-01-01 24490
2010-04-01 25515
2010-07-01 28102
2010-10-01 27901
2011-01-01 26975
2011-04-01 24318
2011-07-01 24755
2011-10-01 26085
2012-01-01 33232
2012-04-01 37762
2012-07-01 33972
2012-10-01 30112
2013-01-01 43430
2013-04-01 50552
2013-07-01 55986
2013-10-01 68090
2014-01-01 58752
2014-04-01 54763
2014-07-01 54347
2014-10-01 67844
2015-01-01 60398
2015-04-01 53121
2015-07-01 57570
2015-10-01 35709
2016-01-01 40067
2016-04-01 65998
2016-07-01 58137
2016-10-01 62090
2017-01-01 61653
2017-04-01 45668
2017-07-01 49151
2017-10-01 46087
2018-01-01 50573
2018-04-01 58676