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
1978-10-01 247
1979-01-01 537
1979-04-01 738
1979-07-01 979
1979-10-01 1119
1980-01-01 1043
1980-04-01 1455
1980-07-01 1332
1980-10-01 1184
1981-01-01 1335
1981-04-01 1078
1981-07-01 1175
1981-10-01 1238
1982-01-01 1249
1982-04-01 1260
1982-07-01 1269
1982-10-01 1528
1983-01-01 1678
1983-04-01 2498
1983-07-01 2678
1983-10-01 2633
1984-01-01 2708
1984-04-01 1972
1984-07-01 1995
1984-10-01 2407
1985-01-01 2444
1985-04-01 2472
1985-07-01 3102
1985-10-01 3004
1986-01-01 3715
1986-04-01 4293
1986-07-01 4795
1986-10-01 5840
1987-01-01 7178
1987-04-01 8138
1987-07-01 8463
1987-10-01 10460
1988-01-01 10275
1988-04-01 9455
1988-07-01 10973
1988-10-01 11776
1989-01-01 11523
1989-04-01 11421
1989-07-01 11721
1989-10-01 13495
1990-01-01 15107
1990-04-01 18438
1990-07-01 21687
1990-10-01 23757
1991-01-01 26026
1991-04-01 30849
1991-07-01 45291
1991-10-01 51134
1992-01-01 66718
1992-04-01 86017
1992-07-01 95358
1992-10-01 97816
1993-01-01 85979
1993-04-01 67103
1993-07-01 57377
1993-10-01 51568
1994-01-01 48425
1994-04-01 47951
1994-07-01 50855
1994-10-01 46213
1995-01-01 48176
1995-04-01 46373
1995-07-01 38294
1995-10-01 43487
1996-01-01 44804
1996-04-01 48602
1996-07-01 52454
1996-10-01 51259
1997-01-01 54596
1997-04-01 55109
1997-07-01 48053
1997-10-01 37052
1998-01-01 27367
1998-04-01 20939
1998-07-01 19370
1998-10-01 28283
1999-01-01 31576
1999-04-01 32950
1999-07-01 35144
1999-10-01 30158
2000-01-01 23761
2000-04-01 21305
2000-07-01 20845
2000-10-01 19359
2001-01-01 15930
2001-04-01 15128
2001-07-01 15810
2001-10-01 16261
2002-01-01 19097
2002-04-01 19201
2002-07-01 19079
2002-10-01 18019
2003-01-01 17505
2003-04-01 18712
2003-07-01 18602
2003-10-01 17883
2004-01-01 16149
2004-04-01 17908
2004-07-01 15205
2004-10-01 16741
2005-01-01 16072
2005-04-01 13824
2005-07-01 14686
2005-10-01 16581
2006-01-01 20284
2006-04-01 21843
2006-07-01 23474
2006-10-01 18895
2007-01-01 16295
2007-04-01 14202
2007-07-01 13399
2007-10-01 16146
2008-01-01 18728
2008-04-01 24099
2008-07-01 24817
2008-10-01 28422
2009-01-01 24688
2009-04-01 27439
2009-07-01 29716
2009-10-01 25577
2010-01-01 26137
2010-04-01 26881
2010-07-01 30411
2010-10-01 36002
2011-01-01 35384
2011-04-01 30052
2011-07-01 29093
2011-10-01 27796
2012-01-01 25727
2012-04-01 23141
2012-07-01 22846
2012-10-01 21318
2013-01-01 23178
2013-04-01 24794
2013-07-01 24089
2013-10-01 21508
2014-01-01 27002
2014-04-01 33290
2014-07-01 39375
2014-10-01 37983
2015-01-01 35889
2015-04-01 34974
2015-07-01 35492
2015-10-01 36884
2016-01-01 41216
2016-04-01 42321
2016-07-01 44705
2016-10-01 44918
2017-01-01 40622
2017-04-01 46603
2017-07-01 49044
2017-10-01 55228
2018-01-01 55601
2018-04-01 56825