Quarterly
1975-03-31 3.475
1975-06-30 3.49
1975-09-30 3.53
1975-12-31 3.53
1976-03-31 3.53
1976-06-30 3.53
1976-09-30 3.53
1976-12-31 3.53
1977-03-31 3.53
1977-06-30 3.53
1977-09-30 3.53
1977-12-31 3.53
1978-03-31 3.494
1978-06-30 3.494
1978-09-30 3.494
1978-12-31 3.494
1979-03-31 3.295
1979-06-30 3.295
1979-09-30 3.295
1979-12-31 3.365
1980-03-31 3.365
1980-06-30 3.365
1980-09-30 3.365
1980-12-31 3.325
1981-03-31 3.345
1981-06-30 3.405
1981-09-30 3.415
1981-12-31 3.415
1982-03-31 3.415
1982-06-30 3.435
1982-09-30 3.435
1982-12-31 3.435
1983-03-31 3.445
1983-06-30 3.445
1983-09-30 3.475
1983-12-31 3.495
1984-03-31 3.515
1984-06-30 3.505
1984-09-30 3.555
1984-12-31 3.575
1985-03-31 3.605
1985-06-30 3.645
1985-09-30 3.645
1985-12-31 3.645
1986-03-31 3.645
1986-06-30 3.745
1986-09-30 3.745
1986-12-31 3.745
1987-03-31 3.745
1987-06-30 3.745
1987-09-30 3.745
1987-12-31 3.745
1988-03-31 3.745
1988-06-30 3.745
1988-09-30 3.745
1988-12-31 3.745
1989-03-31 3.745
1989-06-30 3.745
1989-09-30 3.745
1989-12-31 3.745
1990-03-31 3.745
1990-06-30 3.7505
1990-09-30 3.7505
1990-12-31 3.7505
1991-03-31 3.7505
1991-06-30 3.7505
1991-09-30 3.7505
1991-12-31 3.7505
1992-03-31 3.75
1992-06-30 3.7505
1992-09-30 3.7505
1992-12-31 3.7505
1993-03-31 3.75
1993-06-30 3.75
1993-09-30 3.751
1993-12-31 3.7525
1994-03-31 3.75
1994-06-30 3.7505
1994-09-30 3.751
1994-12-31 3.751
1995-03-31 3.75
1995-06-30 3.75
1995-09-30 3.75
1995-12-31 3.75
1996-03-31 3.75
1996-06-30 3.75
1996-09-30 3.75
1996-12-31 3.75
1997-03-31 3.75
1997-06-30 3.75
1997-09-30 3.7505
1997-12-31 3.7506
1998-03-31 3.7506
1998-06-30 3.7506
1998-09-30 3.7506
1998-12-31 3.7506
1999-03-31 3.7506
1999-06-30 3.7506
1999-09-30 3.7506
1999-12-31 3.7506
2000-03-31 3.7505
2000-06-30 3.7505
2000-09-30 3.7505
2000-12-31 3.7505
2001-03-31 3.7505
2001-06-30 3.7505
2001-09-30 3.7505
2001-12-31 3.7504
2002-03-31 3.7503
2002-06-30 3.7505
2002-09-30 3.7502
2002-12-31 3.7502
2003-03-31 3.7502
2003-06-30 3.7503
2003-09-30 3.7502
2003-12-31 3.7502
2004-03-31 3.75
2004-06-30 3.7503
2004-09-30 3.7503
2004-12-31 3.7507
2005-03-31 3.7503
2005-06-30 3.7503
2005-09-30 3.7522
2005-12-31 3.7504
2006-03-31 3.7503
2006-06-30 3.75
2006-09-30 3.7505
2006-12-31 3.7503
2007-03-31 3.7503
2007-06-30 3.7507
2007-09-30 3.7415
2007-12-31 3.7506
2008-03-31 3.7515
2008-06-30 3.7498
2008-09-30 3.761
2008-12-31 3.753
2009-03-31 3.7505
2009-06-30 3.7502
2009-09-30 3.7503
2009-12-31 3.7508
2010-03-31 3.7502
2010-06-30 3.7505
2010-09-30 3.7503
2010-12-31 3.7503
2011-03-31 3.7503
2011-06-30 3.7501
2011-09-30 3.7504
2011-12-31 3.7501
2012-03-31 3.7505
2012-06-30 3.7505
2012-09-30 3.7501
2012-12-31 3.7506
2013-03-31 3.7502
2013-06-30 3.7501
2013-09-30 3.7502
2013-12-31 3.7505
2014-03-31 3.7504
2014-06-30 3.7505
2014-09-30 3.7515
2014-12-31 3.7526
2015-03-31 3.7511
2015-06-30 3.7507
2015-09-30 3.7503
2015-12-31 3.7539
2016-03-31 3.7507
2016-06-30 3.7508
2016-09-30 3.7518
2016-12-31 3.7508
2017-03-31 3.7503
2017-06-30 3.7503
2017-09-30 3.7501
2017-12-31 3.7501
2018-03-31 3.75
2018-06-30 3.7504
2018-09-30 3.7503
2018-12-31 3.7513
2019-03-31 3.7504
2019-06-30 3.7503
2019-09-30 3.7512
2019-12-31 3.7513
2020-03-31 3.765
2020-06-30 3.751
2020-09-30 3.7509
2020-12-31 3.7516
2021-03-31 3.7504
2021-06-30 3.7504
2021-09-30 3.7507
2021-12-31 3.7555
2022-03-31 3.7515
2022-06-30 3.7521
2022-09-30 3.757
2022-12-31 3.7615
2023-03-31 3.7537
2023-06-30 3.7507
2023-09-30 3.7505
2023-12-31 3.75