Quarterly US dollars
1986-09-30 78303
1986-12-31 82237
1987-03-31 92251
1987-06-30 88242
1987-09-30 86007
1987-12-31 101129
1988-03-31 98918
1988-06-30 92848
1988-09-30 92213
1988-12-31 95057
1989-03-31 93953
1989-06-30 98081
1989-09-30 104107
1989-12-31 113861
1990-03-31 129261
1990-06-30 136945
1990-09-30 159199
1990-12-31 162738
1991-03-31 158185
1991-06-30 155057
1991-09-30 168817
1991-12-31 172249
1992-03-31 165435
1992-06-30 183059
1992-09-30 196533
1992-12-31 185911
1993-03-31 198285
1993-06-30 191841
1993-09-30 202566
1993-12-31 202993
1994-03-31 205539
1994-06-30 211986
1994-09-30 218060
1994-12-31 220424
1995-03-31 244747
1995-06-30 254332
1995-09-30 250199
1995-12-31 266492
1996-03-31 289920
1996-06-30 296961
1996-09-30 320781
1996-12-31 324788
1997-03-31 334137
1997-06-30 325252
1997-09-30 355439
1997-12-31 369041
1998-03-31 405097
1998-06-30 446077
1998-09-30 505834
1998-12-31 450751
1999-03-31 95186
1999-06-30 94453
1999-09-30 105201
1999-12-31 110599
2000-03-31 102976
2000-06-30 105792
2000-09-30 101293
2000-12-31 107435
2001-03-31 96863
2001-06-30 96155
2001-09-30 103000
2001-12-31 102948
2002-03-31 113908
2002-06-30 123932
2002-09-30 124826
2002-12-31 132456
2003-03-31 132233
2003-06-30 148975
2003-09-30 146240
2003-12-31 162854
2004-03-31 194978
2004-06-30 173164
2004-09-30 188683
2004-12-31 193614
2005-03-31 201675
2005-06-30 209962
2005-09-30 217192
2005-12-31 223698
2006-03-31 254664
2006-06-30 272189
2006-09-30 293257
2006-12-31 297764
2007-03-31 332053
2007-06-30 353761
2007-09-30 368020
2007-12-31 369497
2008-03-31 392354
2008-06-30 373313
2008-09-30 333768
2008-12-31 272578
2009-03-31 258900
2009-06-30 278809
2009-09-30 300534
2009-12-31 310291
2010-03-31 322581
2010-06-30 310649
2010-09-30 329324
2010-12-31 353108
2011-03-31 371804
2011-06-30 389862
2011-09-30 375042
2011-12-31 349505
2012-03-31 346016
2012-06-30 330741
2012-09-30 350514
2012-12-31 367340
2013-03-31 367329
2013-06-30 329053
2013-09-30 341535
2013-12-31 341991
2014-03-31 348763
2014-06-30 359724
2014-09-30 329221
2014-12-31 305392
2015-03-31 301591
2015-06-30 299745
2015-09-30 283925
2015-12-31 280503