Quarterly Percent
1978-03-31 6.94
1978-06-30 10.155
1978-09-30 9.75
1978-12-31 12.565
1979-03-31 12.125
1979-06-30 14.065
1979-09-30 14.16
1979-12-31 17.065
1980-03-31 18.565
1980-06-30 17.125
1980-09-30 15.94
1980-12-31 14.875
1981-03-31 12.595
1981-06-30 12.66
1981-09-30 16.875
1981-12-31 15.75
1982-03-31 13.625
1982-06-30 13.065
1982-09-30 10.565
1982-12-31 10.5
1983-03-31 10.845
1983-06-30 9.69
1983-09-30 9.66
1983-12-31 9.375
1984-03-31 8.97
1984-06-30 9.47
1984-09-30 10.78
1984-12-31 10.03
1985-03-31 13.155
1985-06-30 12.53
1985-09-30 11.565
1985-12-31 11.91
1986-03-31 11.345
1986-06-30 9.78
1986-09-30 10.94
1986-12-31 11.22
1987-03-31 9.94
1987-06-30 9.22
1987-09-30 10.315
1987-12-31 8.925
1988-03-31 8.66
1988-06-30 9.895
1988-09-30 11.925
1988-12-31 13.205
1989-03-31 13.045
1989-06-30 14.22
1989-09-30 14.66
1989-12-31 15.145
1990-03-31 15.235
1990-06-30 14.955
1990-09-30 14.955
1990-12-31 14.03
1991-03-31 12.41
1991-06-30 11.31
1991-09-30 10.325
1991-12-31 10.94
1992-03-31 10.81
1992-06-30 10.095
1992-09-30 8.97
1992-12-31 7
1993-03-31 5.94
1993-06-30 5.94
1993-09-30 5.985
1993-12-31 5.31
1994-03-31 5.31
1994-06-30 5.145
1994-09-30 5.83
1994-12-31 6.545
1995-03-31 6.61
1995-06-30 6.895
1995-09-30 6.765
1995-12-31 6.485
1996-03-31 6.03
1996-06-30 5.765
1996-09-30 5.86
1996-12-31 6.455
1997-03-31 6.295
1997-06-30 6.825
1997-09-30 7.235
1997-12-31 7.545
1998-03-31 7.515
1998-06-30 7.7969
1998-09-30 7.28
1998-12-31 6.175
1999-03-31 5.22
1999-06-30 5.11
1999-09-30 5.455
1999-12-31 5.9688
2000-03-31 6.1876
2000-06-30 6.1407
2000-09-30 6.1094
2000-12-31 5.8282
2001-03-31 5.4532
2001-06-30 5.2188
2001-09-30 4.4376
2001-12-31 4.0469
2002-03-31 4.125
2002-06-30 4.0781
2002-09-30 3.8906
2002-12-31 3.95
2003-03-31 3.59
2003-06-30 3.57
2003-09-30 3.665
2003-12-31 3.965
2004-03-31 4.315
2004-06-30 4.78
2004-09-30 4.84
2004-12-31 4.825
2005-03-31 4.915
2005-06-30 4.71
2005-09-30 4.535
2005-12-31 4.58
2006-03-31 4.55
2006-06-30 4.72
2006-09-30 5.035
2006-12-31 5.275
2007-03-31 5.57
2007-06-30 5.955
2007-09-30 6.23
2007-12-31 5.95
2008-03-31 5.985
2008-06-30 5.91
2008-09-30 6.225
2008-12-31 2.825
2009-03-31 1.65
2009-06-30 1.175
2009-09-30 0.575
2009-12-31 0.625
2010-03-31 0.6
2010-06-30 0.75
2010-09-30 0.75
2010-12-31 0.775
2011-03-31 0.8
2011-06-30 0.86
2011-09-30 1.005
2011-12-31 1.1
2012-03-31 1.06
2012-06-30 0.915
2012-09-30 0.61
2012-12-31 0.5
2013-03-31 0.485
2013-06-30 0.485
2013-09-30 0.495
2013-12-31 0.53
2014-03-31 0.53
2014-06-30 0.55
2014-09-30 0.555
2014-12-31 0.53
2015-03-31 0.53
2015-06-30 0.565
2015-09-30 0.57
2015-12-31 0.57
2016-03-31 0.565
2016-06-30 0.55
2016-09-30 0.37
2016-12-31 0.37
2017-03-31 0.33
2017-06-30 0.32
2017-09-30 0.33