Quarter United States Dollar 1986-09-30 12638 1986-12-31 12885 1987-03-31 12196 1987-06-30 13153 1987-09-30 12713 1987-12-31 13271 1988-03-31 12812 1988-06-30 13900 1988-09-30 13504 1988-12-31 14710 1989-03-31 14165 1989-06-30 13927 1989-09-30 13005 1989-12-31 13754 1990-03-31 13103 1990-06-30 12253 1990-09-30 12630 1990-12-31 12109 1991-03-31 12867 1991-06-30 9960 1991-09-30 10102 1991-12-31 10627 1992-03-31 8989 1992-06-30 8715 1992-09-30 11140 1992-12-31 8600 1993-03-31 8064 1993-06-30 6930 1993-09-30 6355 1993-12-31 7146 1994-03-31 6312 1994-06-30 5289 1994-09-30 4611 1994-12-31 3022 1995-03-31 2834 1995-06-30 4740 1995-09-30 5714 1995-12-31 3668 1996-03-31 2688 1996-06-30 2026 1996-09-30 1683 1996-12-31 2184 1997-03-31 1865 1997-06-30 3490 1997-09-30 2501 1997-12-31 2363 1998-03-31 2594 1998-06-30 3684 1998-09-30 3046 1998-12-31 2589 1999-03-31 3926 1999-06-30 4082 1999-09-30 3706 1999-12-31 4041 2000-03-31 3102 2000-06-30 3283 2000-09-30 2468 2000-12-31 3771 2001-03-31 2866 2001-06-30 4970 2001-09-30 3898 2001-12-31 4509 2002-03-31 4866 2002-06-30 4278 2002-09-30 5999 2002-12-31 4762 2003-03-31 5899 2003-06-30 5970 2003-09-30 13945 2003-12-31 8893 2004-03-31 14475 2004-06-30 17717 2004-09-30 32113 2004-12-31 23323 2005-03-31 31246 2005-06-30 26121 2005-09-30 36248 2005-12-31 32772 2006-03-31 38434 2006-06-30 29995 2006-09-30 39689 2006-12-31 19707 2007-03-31 38200 2007-06-30 38041 2007-09-30 37758 2007-12-31 28437 2008-03-31 35242 2008-06-30 25489 2008-09-30 25718 2008-12-31 13139 2009-03-31 17864 2009-06-30 30481 2009-09-30 20280 2009-12-31 15457 2010-03-31 20967 2010-06-30 22154 2010-09-30 20449 2010-12-31 18370 2011-03-31 17822 2011-06-30 20776 2011-09-30 14052 2011-12-31 9997 2012-03-31 10186 2012-06-30 4070 2012-09-30 7442 2012-12-31 9249 2013-03-31 14887 2013-06-30 21464 2013-09-30 8727 2013-12-31 14269 2014-03-31 18717 2014-06-30 13702 2014-09-30 10858 2014-12-31 11087 2015-03-31 10034 2015-06-30 16616 2015-09-30 23392 2015-12-31 20640