Quarterly Millions of US Dollars
1987-01-01 0
1987-04-01 0
1987-07-01 0
1987-10-01 0
1988-01-01 0
1988-04-01 0
1988-07-01 0
1988-10-01 0
1989-01-01 0
1989-04-01 0
1989-07-01 0
1989-10-01 0
1990-01-01 0
1990-04-01 0
1990-07-01 0
1990-10-01 0
1991-01-01 0
1991-04-01 0
1991-07-01 0
1991-10-01 0
1992-01-01 0
1992-04-01 0
1992-07-01 0
1992-10-01 0
1993-01-01 0
1993-04-01 0
1993-07-01 0
1993-10-01 0
1994-01-01 0
1994-04-01 9
1994-07-01 22
1994-10-01 27
1995-01-01 33
1995-04-01 33
1995-07-01 44
1995-10-01 50
1996-01-01 49
1996-04-01 65
1996-07-01 71
1996-10-01 76
1997-01-01 85
1997-04-01 98
1997-07-01 99
1997-10-01 115
1998-01-01 124
1998-04-01 140
1998-07-01 196
1998-10-01 251
1999-01-01 248
1999-04-01 265
1999-07-01 292
1999-10-01 345
2000-01-01 327
2000-04-01 312
2000-07-01 276
2000-10-01 265
2001-01-01 246
2001-04-01 234
2001-07-01 241
2001-10-01 301
2002-01-01 327
2002-04-01 375
2002-07-01 423
2002-10-01 542
2003-01-01 570
2003-04-01 616
2003-07-01 671
2003-10-01 969
2004-01-01 914
2004-04-01 962
2004-07-01 1123
2004-10-01 1792
2005-01-01 1816
2005-04-01 2316
2005-07-01 2520
2005-10-01 3127
2006-01-01 2830
2006-04-01 3334
2006-07-01 3586
2006-10-01 4140
2007-01-01 4128
2007-04-01 5259
2007-07-01 5894
2007-10-01 6270
2008-01-01 4388
2008-04-01 4342
2008-07-01 3574
2008-10-01 2756
2009-01-01 2834
2009-04-01 2231
2009-07-01 1966
2009-10-01 1640
2010-01-01 1048
2010-04-01 1092
2010-07-01 1229
2010-10-01 1246
2011-01-01 1343
2011-04-01 1310
2011-07-01 1177
2011-10-01 1163
2012-01-01 1071
2012-04-01 1033
2012-07-01 1021
2012-10-01 1028
2013-01-01 1170
2013-04-01 1359
2013-07-01 1151
2013-10-01 1441
2014-01-01 1392
2014-04-01 1390
2014-07-01 1547
2014-10-01 1733
2015-01-01 1611
2015-04-01 1892
2015-07-01 1940
2015-10-01 1993
2016-01-01 2117
2016-04-01 2223
2016-07-01 2424
2016-10-01 2594
2017-01-01 2625
2017-04-01 2985
2017-07-01 2835
2017-10-01 2912
2018-01-01 3235