Quarterly US dollars
1986-09-30 191817
1986-12-31 199347
1987-03-31 205914
1987-06-30 212888
1987-09-30 220811
1987-12-31 238415
1988-03-31 235696
1988-06-30 236575
1988-09-30 237898
1988-12-31 249074
1989-03-31 254711
1989-06-30 252465
1989-09-30 258895
1989-12-31 267050
1990-03-31 278923
1990-06-30 288840
1990-09-30 323610
1990-12-31 336487
1991-03-31 326418
1991-06-30 309916
1991-09-30 327420
1991-12-31 316481
1992-03-31 300193
1992-06-30 312990
1992-09-30 323217
1992-12-31 296129
1993-03-31 297039
1993-06-30 289991
1993-09-30 291598
1993-12-31 279713
1994-03-31 284203
1994-06-30 292878
1994-09-30 300938
1994-12-31 294640
1995-03-31 309918
1995-06-30 310898
1995-09-30 318879
1995-12-31 331719
1996-03-31 361207
1996-06-30 362356
1996-09-30 369605
1996-12-31 369615
1997-03-31 398515
1997-06-30 409237
1997-09-30 419140
1997-12-31 427817
1998-03-31 432400
1998-06-30 447654
1998-09-30 493291
1998-12-31 427022
1999-03-31 479651
1999-06-30 486415
1999-09-30 491378
1999-12-31 461410
2000-03-31 509444
2000-06-30 504369
2000-09-30 487892
2000-12-31 486334
2001-03-31 537061
2001-06-30 533228
2001-09-30 546095
2001-12-31 541149
2002-03-31 571870
2002-06-30 594185
2002-09-30 643937
2002-12-31 670377
2003-03-31 724698
2003-06-30 763822
2003-09-30 826211
2003-12-31 897612
2004-03-31 989588
2004-06-30 974457
2004-09-30 1056805
2004-12-31 1163397
2005-03-31 1244810
2005-06-30 1235371
2005-09-30 1260569
2005-12-31 1236289
2006-03-31 1383214
2006-06-30 1482268
2006-09-30 1536015
2006-12-31 1539115
2007-03-31 1732147
2007-06-30 1872481
2007-09-30 2024022
2007-12-31 2075662
2008-03-31 2228217
2008-06-30 2253623
2008-09-30 2167797
2008-12-31 1758026
2009-03-31 1802136
2009-06-30 1863401
2009-09-30 1875849
2009-12-31 1853008
2010-03-31 1897219
2010-06-30 1833511
2010-09-30 2006345
2010-12-31 1980204
2011-03-31 2110420
2011-06-30 2173510
2011-09-30 2053654
2011-12-31 1951484
2012-03-31 2068227
2012-06-30 2008534
2012-09-30 2008007
2012-12-31 1978826
2013-03-31 1966133
2013-06-30 2020880
2013-09-30 1972257
2013-12-31 1899131
2014-03-31 1915446
2014-06-30 1913448
2014-09-30 1880721
2014-12-31 1821065
2015-03-31 1767276
2015-06-30 1766076
2015-09-30 1765669
2015-12-31 1651923