Quarterly Millions of US Dollars
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
1994-04-01 494
1994-07-01 659
1994-10-01 1198
1995-01-01 1288
1995-04-01 1163
1995-07-01 1433
1995-10-01 1548
1996-01-01 2003
1996-04-01 1820
1996-07-01 1581
1996-10-01 1367
1997-01-01 840
1997-04-01 943
1997-07-01 1567
1997-10-01 2987
1998-01-01 2929
1998-04-01 3563
1998-07-01 3423
1998-10-01 1597
1999-01-01 2624
1999-04-01 1640
1999-07-01 1519
1999-10-01 1768
2000-01-01 562
2000-04-01 1275
2000-07-01 916
2000-10-01 1968
2001-01-01 2102
2001-04-01 2556
2001-07-01 2686
2001-10-01 2089
2002-01-01 2686
2002-04-01 2932
2002-07-01 3398
2002-10-01 3566
2003-01-01 4754
2003-04-01 3748
2003-07-01 3767
2003-10-01 3828
2004-01-01 2507
2004-04-01 3207
2004-07-01 3234
2004-10-01 2952
2005-01-01 1390
2005-04-01 1192
2005-07-01 704
2005-10-01 2986
2006-01-01 2527
2006-04-01 2907
2006-07-01 3499
2006-10-01 1588
2007-01-01 4715
2007-04-01 3725
2007-07-01 3159
2007-10-01 3786
2008-01-01 600
2008-04-01 1850
2008-07-01 2708
2008-10-01 2085
2009-01-01 3379
2009-04-01 3761
2009-07-01 2964
2009-10-01 2941
2010-01-01 2511
2010-04-01 1670
2010-07-01 1774
2010-10-01 1752
2011-01-01 1750
2011-04-01 1000
2011-07-01 2350
2011-10-01 2294
2012-01-01 2836
2012-04-01 2759
2012-07-01 1500
2012-10-01 1500
2013-01-01 3030
2013-04-01 3058
2013-07-01 3101
2013-10-01 3129
2014-01-01 2750
2014-04-01 2750
2014-07-01 2750
2014-10-01 2750
2015-01-01 807
2015-04-01 839
2015-07-01 3170
2015-10-01 3147
2016-01-01 4038
2016-04-01 3995
2016-07-01 3924
2016-10-01 3831
2017-01-01 3750
2017-04-01 6000
2017-07-01 3750
2017-10-01 6250
2018-01-01 6250
2018-04-01 5457