Quarterly Millions of US Dollars
1966-01-01 0
1966-04-01 0
1966-07-01 0
1966-10-01 0
1967-01-01 0
1967-04-01 0
1967-07-01 0
1967-10-01 0
1968-01-01 0
1968-04-01 0
1968-07-01 0
1968-10-01 0
1969-01-01 0
1969-04-01 0
1969-07-01 0
1969-10-01 0
1970-01-01 0
1970-04-01 0
1970-07-01 0
1970-10-01 0
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 28
1978-04-01 27
1978-07-01 93
1978-10-01 147
1979-01-01 113
1979-04-01 141
1979-07-01 243
1979-10-01 183
1980-01-01 167
1980-04-01 153
1980-07-01 100
1980-10-01 151
1981-01-01 180
1981-04-01 212
1981-07-01 184
1981-10-01 145
1982-01-01 231
1982-04-01 464
1982-07-01 427
1982-10-01 456
1983-01-01 327
1983-04-01 288
1983-07-01 462
1983-10-01 489
1984-01-01 499
1984-04-01 289
1984-07-01 77
1984-10-01 415
1985-01-01 546
1985-04-01 896
1985-07-01 1124
1985-10-01 1372
1986-01-01 1344
1986-04-01 1178
1986-07-01 1286
1986-10-01 1106
1987-01-01 1517
1987-04-01 1345
1987-07-01 1147
1987-10-01 843
1988-01-01 864
1988-04-01 1076
1988-07-01 1635
1988-10-01 1746
1989-01-01 1267
1989-04-01 1190
1989-07-01 587
1989-10-01 1141
1990-01-01 682
1990-04-01 413
1990-07-01 582
1990-10-01 1007
1991-01-01 946
1991-04-01 2110
1991-07-01 2196
1991-10-01 1865
1992-01-01 2594
1992-04-01 2175
1992-07-01 2600
1992-10-01 2407
1993-01-01 1943
1993-04-01 1914
1993-07-01 3009
1993-10-01 3105
1994-01-01 3360
1994-04-01 3144
1994-07-01 3576
1994-10-01 3367
1995-01-01 3403
1995-04-01 2834
1995-07-01 3144
1995-10-01 3286
1996-01-01 4206
1996-04-01 4485
1996-07-01 2912
1996-10-01 4478
1997-01-01 3444
1997-04-01 2833
1997-07-01 2242
1997-10-01 3067
1998-01-01 2718
1998-04-01 2453
1998-07-01 2183
1998-10-01 2299
1999-01-01 1865
1999-04-01 1947
1999-07-01 2696
1999-10-01 2823
2000-01-01 3116
2000-04-01 2533
2000-07-01 2049
2000-10-01 2686
2001-01-01 2647
2001-04-01 3406
2001-07-01 3263
2001-10-01 3017
2002-01-01 2865
2002-04-01 2943
2002-07-01 3157
2002-10-01 2385
2003-01-01 4461
2003-04-01 4064
2003-07-01 3333
2003-10-01 3812
2004-01-01 4787
2004-04-01 6068
2004-07-01 6461
2004-10-01 9531
2005-01-01 9685
2005-04-01 7611
2005-07-01 7367
2005-10-01 7153
2006-01-01 6735
2006-04-01 7630
2006-07-01 7682
2006-10-01 6164
2007-01-01 5639
2007-04-01 6023
2007-07-01 6149
2007-10-01 8481
2008-01-01 11103
2008-04-01 6437
2008-07-01 6238
2008-10-01 4544
2009-01-01 4636
2009-04-01 5748
2009-07-01 3546
2009-10-01 3542
2010-01-01 2189
2010-04-01 1290
2010-07-01 889
2010-10-01 1877
2011-01-01 2657
2011-04-01 2427
2011-07-01 4208
2011-10-01 4923
2012-01-01 4795
2012-04-01 4563
2012-07-01 3034
2012-10-01 2985
2013-01-01 7667
2013-04-01 5550
2013-07-01 5914
2013-10-01 7078
2014-01-01 2714
2014-04-01 2732
2014-07-01 2105
2014-10-01 1493
2015-01-01 1177
2015-04-01 1539
2015-07-01 3950
2015-10-01 7710
2016-01-01 9178
2016-04-01 8890
2016-07-01 6029
2016-10-01 2131
2017-01-01 1560
2017-04-01 2828
2017-07-01 2796
2017-10-01 2905
2018-01-01 3235
2018-04-01 2125