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 20
1978-04-01 20
1978-07-01 34
1978-10-01 54
1979-01-01 117
1979-04-01 165
1979-07-01 231
1979-10-01 252
1980-01-01 171
1980-04-01 135
1980-07-01 81
1980-10-01 100
1981-01-01 147
1981-04-01 145
1981-07-01 144
1981-10-01 141
1982-01-01 145
1982-04-01 265
1982-07-01 267
1982-10-01 429
1983-01-01 531
1983-04-01 416
1983-07-01 455
1983-10-01 338
1984-01-01 211
1984-04-01 292
1984-07-01 266
1984-10-01 698
1985-01-01 843
1985-04-01 893
1985-07-01 1103
1985-10-01 1089
1986-01-01 1026
1986-04-01 1179
1986-07-01 1423
1986-10-01 1013
1987-01-01 1244
1987-04-01 1074
1987-07-01 1187
1987-10-01 1246
1988-01-01 1085
1988-04-01 1412
1988-07-01 966
1988-10-01 1154
1989-01-01 1245
1989-04-01 978
1989-07-01 1175
1989-10-01 1237
1990-01-01 1627
1990-04-01 1797
1990-07-01 2179
1990-10-01 2913
1991-01-01 3162
1991-04-01 3133
1991-07-01 3301
1991-10-01 3636
1992-01-01 3593
1992-04-01 4809
1992-07-01 5636
1992-10-01 5442
1993-01-01 4939
1993-04-01 4634
1993-07-01 5986
1993-10-01 5052
1994-01-01 5245
1994-04-01 4687
1994-07-01 5114
1994-10-01 5710
1995-01-01 6204
1995-04-01 7213
1995-07-01 7927
1995-10-01 6458
1996-01-01 6921
1996-04-01 6716
1996-07-01 6123
1996-10-01 10309
1997-01-01 11375
1997-04-01 11333
1997-07-01 9684
1997-10-01 8252
1998-01-01 7359
1998-04-01 7376
1998-07-01 7644
1998-10-01 5697
1999-01-01 6477
1999-04-01 6462
1999-07-01 7940
1999-10-01 9360
2000-01-01 7790
2000-04-01 7137
2000-07-01 6232
2000-10-01 5092
2001-01-01 4356
2001-04-01 5242
2001-07-01 5593
2001-10-01 4762
2002-01-01 4479
2002-04-01 5463
2002-07-01 5502
2002-10-01 8270
2003-01-01 8039
2003-04-01 6909
2003-07-01 8952
2003-10-01 6197
2004-01-01 7835
2004-04-01 8270
2004-07-01 5657
2004-10-01 6491
2005-01-01 8711
2005-04-01 6995
2005-07-01 15099
2005-10-01 16262
2006-01-01 19915
2006-04-01 21689
2006-07-01 19375
2006-10-01 19790
2007-01-01 20352
2007-04-01 19358
2007-07-01 20619
2007-10-01 19181
2008-01-01 18950
2008-04-01 26372
2008-07-01 17049
2008-10-01 21180
2009-01-01 21902
2009-04-01 17729
2009-07-01 20307
2009-10-01 21279
2010-01-01 17271
2010-04-01 21108
2010-07-01 21679
2010-10-01 21760
2011-01-01 24256
2011-04-01 22245
2011-07-01 21326
2011-10-01 19285
2012-01-01 21470
2012-04-01 17358
2012-07-01 16955
2012-10-01 18302
2013-01-01 20120
2013-04-01 23772
2013-07-01 24905
2013-10-01 25785
2014-01-01 28279
2014-04-01 24804
2014-07-01 24235
2014-10-01 30123
2015-01-01 30637
2015-04-01 34178
2015-07-01 31902
2015-10-01 25725
2016-01-01 22911
2016-04-01 22757
2016-07-01 26623
2016-10-01 26998
2017-01-01 25209
2017-04-01 28364
2017-07-01 32610
2017-10-01 36274
2018-01-01 39922
2018-04-01 45350