Quarterly Millions of US Dollars
1991-04-01 81
1991-07-01 88
1991-10-01 94
1992-01-01 87
1992-04-01 95
1992-07-01 89
1992-10-01 76
1993-01-01 75
1993-04-01 75
1993-07-01 75
1993-10-01 74
1994-01-01 74
1994-04-01 77
1994-07-01 79
1994-10-01 88
1995-01-01 111
1995-04-01 110
1995-07-01 114
1995-10-01 103
1996-01-01 101
1996-04-01 102
1996-07-01 103
1996-10-01 110
1997-01-01 86
1997-04-01 88
1997-07-01 81
1997-10-01 83
1998-01-01 84
1998-04-01 83
1998-07-01 85
1998-10-01 83
1999-01-01 88
1999-04-01 138
1999-07-01 119
1999-10-01 169
2000-01-01 163
2000-04-01 250
2000-07-01 243
2000-10-01 800
2001-01-01 1098
2001-04-01 2379
2001-07-01 3581
2001-10-01 3836
2002-01-01 4011
2002-04-01 5103
2002-07-01 3666
2002-10-01 4230
2003-01-01 4212
2003-04-01 4473
2003-07-01 4799
2003-10-01 5133
2004-01-01 5225
2004-04-01 5171
2004-07-01 4526
2004-10-01 4318
2005-01-01 4281
2005-04-01 4093
2005-07-01 4262
2005-10-01 4201
2006-01-01 4297
2006-04-01 4387
2006-07-01 3470
2006-10-01 3468
2007-01-01 3252
2007-04-01 3487
2007-07-01 4285
2007-10-01 3957
2008-01-01 4085
2008-04-01 3866
2008-07-01 3271
2008-10-01 3053
2009-01-01 2866
2009-04-01 2930
2009-07-01 2906
2009-10-01 2779
2010-01-01 2453
2010-04-01 2328
2010-07-01 2398
2010-10-01 2207
2011-01-01 2071
2011-04-01 1906
2011-07-01 1782
2011-10-01 1731
2012-01-01 1602
2012-04-01 1464
2012-07-01 1494
2012-10-01 1481
2013-01-01 1436
2013-04-01 985
2013-07-01 1016
2013-10-01 1028
2014-01-01 1031
2014-04-01 1036
2014-07-01 988
2014-10-01 912
2015-01-01 769
2015-04-01 794
2015-07-01 479
2015-10-01 473
2016-01-01 470
2016-04-01 463
2016-07-01 464
2016-10-01 452
2017-01-01 418
2017-04-01 432
2017-07-01 309
2017-10-01 236
2018-01-01 239
2018-04-01 164