Quarterly US dollars
1986-09-30 55910
1986-12-31 59551
1987-03-31 69046
1987-06-30 71791
1987-09-30 76881
1987-12-31 93068
1988-03-31 99544
1988-06-30 104888
1988-09-30 108112
1988-12-31 114760
1989-03-31 113078
1989-06-30 109079
1989-09-30 122174
1989-12-31 121441
1990-03-31 132821
1990-06-30 147229
1990-09-30 162892
1990-12-31 176463
1991-03-31 159722
1991-06-30 141942
1991-09-30 149028
1991-12-31 151957
1992-03-31 143123
1992-06-30 157429
1992-09-30 158170
1992-12-31 128385
1993-03-31 129865
1993-06-30 124382
1993-09-30 123895
1993-12-31 126036
1994-03-31 117934
1994-06-30 120641
1994-09-30 136675
1994-12-31 140667
1995-03-31 148362
1995-06-30 155512
1995-09-30 152271
1995-12-31 152083
1996-03-31 145373
1996-06-30 143044
1996-09-30 144978
1996-12-31 165119
1997-03-31 168019
1997-06-30 174141
1997-09-30 207300
1997-12-31 231765
1998-03-31 229410
1998-06-30 238092
1998-09-30 259500
1998-12-31 258882
1999-03-31 263722
1999-06-30 267826
1999-09-30 293872
1999-12-31 290502
2000-03-31 306022
2000-06-30 298037
2000-09-30 302081
2000-12-31 318918
2001-03-31 332022
2001-06-30 309758
2001-09-30 328840
2001-12-31 336152
2002-03-31 330643
2002-06-30 352673
2002-09-30 371125
2002-12-31 387710
2003-03-31 391058
2003-06-30 421127
2003-09-30 435020
2003-12-31 468537
2004-03-31 530979
2004-06-30 532850
2004-09-30 518575
2004-12-31 572183
2005-03-31 586744
2005-06-30 570705
2005-09-30 590081
2005-12-31 603903
2006-03-31 635438
2006-06-30 728253
2006-09-30 720991
2006-12-31 798694
2007-03-31 989802
2007-06-30 1011444
2007-09-30 1128942
2007-12-31 1267884
2008-03-31 1298096
2008-06-30 1232557
2008-09-30 1142623
2008-12-31 863343
2009-03-31 897901
2009-06-30 985895
2009-09-30 905204
2009-12-31 876258
2010-03-31 841735
2010-06-30 825075
2010-09-30 865943
2010-12-31 818605
2011-03-31 780961
2011-06-30 789366
2011-09-30 741844
2011-12-31 704638
2012-03-31 777263
2012-06-30 760092
2012-09-30 814601
2012-12-31 809661
2013-03-31 724120
2013-06-30 718600
2013-09-30 745013
2013-12-31 767445
2014-03-31 759073
2014-06-30 771919
2014-09-30 715626
2014-12-31 704155
2015-03-31 674209
2015-06-30 725455
2015-09-30 732586
2015-12-31 709505