Quarterly Millions of US Dollars
1988-04-01 2740
1988-07-01 2548
1988-10-01 2954
1989-01-01 2654
1989-04-01 2504
1989-07-01 2640
1989-10-01 2980
1990-01-01 2926
1990-04-01 3337
1990-07-01 4553
1990-10-01 3977
1991-01-01 3692
1991-04-01 2582
1991-07-01 2762
1991-10-01 1819
1992-01-01 2522
1992-04-01 2876
1992-07-01 2987
1992-10-01 2813
1993-01-01 2944
1993-04-01 2397
1993-07-01 3276
1993-10-01 3389
1994-01-01 3772
1994-04-01 3727
1994-07-01 4081
1994-10-01 5238
1995-01-01 3955
1995-04-01 4352
1995-07-01 4213
1995-10-01 5500
1996-01-01 7038
1996-04-01 8244
1996-07-01 8113
1996-10-01 8363
1997-01-01 7636
1997-04-01 7208
1997-07-01 6677
1997-10-01 7738
1998-01-01 8002
1998-04-01 6665
1998-07-01 6256
1998-10-01 5610
1999-01-01 7120
1999-04-01 7624
1999-07-01 7453
1999-10-01 6819
2000-01-01 7747
2000-04-01 7383
2000-07-01 6092
2000-10-01 7024
2001-01-01 5751
2001-04-01 4946
2001-07-01 4453
2001-10-01 4546
2002-01-01 4991
2002-04-01 5910
2002-07-01 5387
2002-10-01 4958
2003-01-01 5641
2003-04-01 7108
2003-07-01 3628
2003-10-01 4591
2004-01-01 4574
2004-04-01 3918
2004-07-01 4437
2004-10-01 4203
2005-01-01 4551
2005-04-01 4380
2005-07-01 3944
2005-10-01 5525
2006-01-01 6435
2006-04-01 6204
2006-07-01 4780
2006-10-01 4492
2007-01-01 6102
2007-04-01 6771
2007-07-01 4275
2007-10-01 3706
2008-01-01 3554
2008-04-01 3149
2008-07-01 2869
2008-10-01 1426
2009-01-01 1409
2009-04-01 1203
2009-07-01 1326
2009-10-01 1179
2010-01-01 1737
2010-04-01 1235
2010-07-01 1110
2010-10-01 1820
2011-01-01 1507
2011-04-01 1546
2011-07-01 1444
2011-10-01 1366
2012-01-01 1312
2012-04-01 1359
2012-07-01 1703
2012-10-01 1618
2013-01-01 1722
2013-04-01 1268
2013-07-01 1827
2013-10-01 1539
2014-01-01 1772
2014-04-01 1510
2014-07-01 1851
2014-10-01 1606
2015-01-01 1407
2015-04-01 2369
2015-07-01 2613
2015-10-01 2776
2016-01-01 3001
2016-04-01 2888
2016-07-01 2984
2016-10-01 2819
2017-01-01 2814
2017-04-01 2902
2017-07-01 2784
2017-10-01 3118
2018-01-01 3289