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
1982-04-01 295
1982-07-01 297
1982-10-01 459
1983-01-01 561
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
1985-04-01 943
1985-07-01 1153
1985-10-01 1139
1986-01-01 1076
1986-04-01 1179
1986-07-01 1423
1986-10-01 1019
1987-01-01 1259
1987-04-01 1089
1987-07-01 1201
1987-10-01 1262
1988-01-01 1185
1988-04-01 1537
1988-07-01 1094
1988-10-01 1211
1989-01-01 1212
1989-04-01 918
1989-07-01 1118
1989-10-01 1544
1990-01-01 1993
1990-04-01 2328
1990-07-01 2918
1990-10-01 3998
1991-01-01 4554
1991-04-01 4503
1991-07-01 4576
1991-10-01 4681
1992-01-01 4853
1992-04-01 6152
1992-07-01 7160
1992-10-01 6782
1993-01-01 5831
1993-04-01 5791
1993-07-01 7377
1993-10-01 6262
1994-01-01 6264
1994-04-01 5538
1994-07-01 6117
1994-10-01 6583
1995-01-01 7802
1995-04-01 9060
1995-07-01 10197
1995-10-01 8849
1996-01-01 7986
1996-04-01 7513
1996-07-01 7272
1996-10-01 11461
1997-01-01 11897
1997-04-01 11572
1997-07-01 9977
1997-10-01 8608
1998-01-01 7670
1998-04-01 7487
1998-07-01 7778
1998-10-01 5789
1999-01-01 6685
1999-04-01 6978
1999-07-01 9416
1999-10-01 10019
2000-01-01 7675
2000-04-01 7239
2000-07-01 5856
2000-10-01 5953
2001-01-01 5246
2001-04-01 6425
2001-07-01 7323
2001-10-01 6770
2002-01-01 6594
2002-04-01 7093
2002-07-01 6989
2002-10-01 9517
2003-01-01 8848
2003-04-01 6830
2003-07-01 8867
2003-10-01 7830
2004-01-01 10937
2004-04-01 12064
2004-07-01 8526
2004-10-01 12355
2005-01-01 11992
2005-04-01 9387
2005-07-01 17902
2005-10-01 19461
2006-01-01 22479
2006-04-01 24840
2006-07-01 21695
2006-10-01 21263
2007-01-01 22303
2007-04-01 22637
2007-07-01 22820
2007-10-01 20708
2008-01-01 20213
2008-04-01 29837
2008-07-01 21143
2008-10-01 23426
2009-01-01 24858
2009-04-01 21017
2009-07-01 25725
2009-10-01 26009
2010-01-01 21905
2010-04-01 24945
2010-07-01 26313
2010-10-01 26589
2011-01-01 25930
2011-04-01 25299
2011-07-01 26291
2011-10-01 22411
2012-01-01 24034
2012-04-01 21500
2012-07-01 22595
2012-10-01 21042
2013-01-01 23639
2013-04-01 29130
2013-07-01 28592
2013-10-01 29128
2014-01-01 31864
2014-04-01 26998
2014-07-01 25784
2014-10-01 34178
2015-01-01 33355
2015-04-01 37226
2015-07-01 37006
2015-10-01 29530
2016-01-01 27113
2016-04-01 26411
2016-07-01 30612
2016-10-01 29752
2017-01-01 27654
2017-04-01 31300
2017-07-01 35004
2017-10-01 38593
2018-01-01 44261
2018-04-01 50882