Quarterly Percent
1977-03-31 11.58
1977-06-30 7.55
1977-09-30 6.25
1977-12-31 4.84
1978-03-31 6.86
1978-06-30 10.33
1978-09-30 10.86
1978-12-31 11.23
1979-03-31 13.98
1979-06-30 13.51
1979-09-30 14.79
1979-12-31 15.58
1980-03-31 15.94
1980-06-30 16.09
1980-09-30 15.74
1980-12-31 14.73
1981-03-31 13.45
1981-06-30 10.3
1981-09-30 11.56
1981-12-31 13.74
1982-03-31 13.56
1982-06-30 12.31
1982-09-30 11.7
1982-12-31 10.09
1983-03-31 11.09
1983-06-30 10.19
1983-09-30 9.34
1983-12-31 8.99
1984-03-31 9.02
1984-06-30 8.07
1984-09-30 11
1984-12-31 9.9
1985-03-31 13.26
1985-06-30 12.88
1985-09-30 11.99
1985-12-31 11.51
1986-03-31 12.08
1986-06-30 10.76
1986-09-30 9.7
1986-12-31 10.4
1987-03-31 10.95
1987-06-30 9.2
1987-09-30 9.06
1987-12-31 9.05
1988-03-31 8.24
1988-06-30 7.36
1988-09-30 10.06
1988-12-31 12.05
1989-03-31 12.7
1989-06-30 12.19
1989-09-30 13.8
1989-12-31 14.82
1990-03-31 14.82
1990-06-30 14.78
1990-09-30 14.86
1990-12-31 14.26
1991-03-31 13.78
1991-06-30 11.9
1991-09-30 10.95
1991-12-31 10.53
1992-03-31 10.49
1992-06-30 9.96
1992-09-30 9.81
1992-12-31 7.94
1993-03-31 6.21
1993-06-30 5.71
1993-09-30 5.89
1993-12-31 5.7
1994-03-31 5.2
1994-06-30 4.7
1994-09-30 4.8
1994-12-31 5.2
1995-03-31 5.9
1995-06-30 5.9
1995-09-30 6.6
1995-12-31 6.7
1996-03-31 6.2
1996-06-30 5.9
1996-09-30 5.7
1996-12-31 5.8
1997-03-31 5.9
1997-06-30 6.1
1997-09-30 6.8
1997-12-31 7.1
1998-03-31 7.3
1998-06-30 7.2
1998-09-30 7.4
1998-12-31 6.9
1999-03-31 5.7
1999-06-30 5.1
1999-09-30 4.9
1999-12-31 5.1
2000-03-31 5.6
2000-06-30 5.9
2000-09-30 5.9
2000-12-31 5.9
2001-03-31 5.6
2001-06-30 5.2
2001-09-30 4.9
2001-12-31 4.2
2002-03-31 3.9
2002-06-30 3.7
2002-09-30 3.9
2002-12-31 4
2003-03-31 3.7
2003-06-30 3.5
2003-09-30 3.4
2003-12-31 3.5
2004-03-31 3.8
2004-06-30 4.1
2004-09-30 4.6
2004-12-31 4.7
2005-03-31 4.7
2005-06-30 4.8
2005-09-30 4.6
2005-12-31 4.5
2006-03-31 4.5
2006-06-30 4.5
2006-09-30 4.7
2006-12-31 5
2007-03-31 5.3
2007-06-30 5.4
2007-09-30 5.8
2007-12-31 5.7
2008-03-31 5.4
2008-06-30 5
2008-09-30 5
2008-12-31 3
2009-03-31 0.9
2009-06-30 0.4
2009-09-30 0.4
2009-12-31 0.4