Quarterly Percent
1977-03-31 5.76
1977-06-30 2.95
1977-09-30 2.64
1977-12-31 2.09
1978-03-31 2.09
1978-06-30 2.89
1978-09-30 4.36
1978-12-31 5.14
1979-03-31 6.92
1979-06-30 6.65
1979-09-30 8.05
1979-12-31 8.87
1980-03-31 10.5
1980-06-30 10.5
1980-09-30 10.03
1980-12-31 9.22
1981-03-31 8.05
1981-06-30 6.3
1981-09-30 6.3
1981-12-31 8.87
1982-03-31 8.17
1982-06-30 7.18
1982-09-30 6.07
1982-12-31 4.73
1983-03-31 5.6
1983-06-30 4.9
1983-09-30 4.2
1983-12-31 3.97
1984-03-31 5.47
1984-06-30 5.6
1984-09-30 7.76
1984-12-31 7.12
1985-03-31 10.76
1985-06-30 10.9
1985-09-30 9.75
1985-12-31 9.14
1986-03-31 9.71
1986-06-30 7.79
1986-09-30 7.3
1986-12-31 7.99
1987-03-31 7.97
1987-06-30 6.39
1987-09-30 6.45
1987-12-31 5.99
1988-03-31 5.33
1988-06-30 4.7
1988-09-30 6.85
1988-12-31 8.05
1989-03-31 10.19
1989-06-30 10.56
1989-09-30 10.6
1989-12-31 11.08
1990-03-31 11.31
1990-06-30 11.46
1990-09-30 11.38
1990-12-31 10.43
1991-03-31 9.93
1991-06-30 8.28
1991-09-30 7.57
1991-12-31 7.21
1992-03-31 6.99
1992-06-30 6.29
1992-09-30 5.86
1992-12-31 3.75
1993-03-31 2.6
1993-06-30 2.23
1993-09-30 3.05
1993-12-31 3.2
1994-03-31 2.94
1994-06-30 2.86
1994-09-30 2.85
1994-12-31 3.13
1995-03-31 3.33
1995-06-30 3.46
1995-09-30 3.45
1995-12-31 3.17
1996-03-31 2.67
1996-06-30 2.43
1996-09-30 2.28
1996-12-31 2.22
1997-03-31 2.41
1997-06-30 2.52
1997-09-30 3.49
1997-12-31 3.76
1998-03-31 3.74
1998-06-30 3.73
1998-09-30 3.96
1998-12-31 2.4
1999-03-31 2.2
1999-06-30 1.9
1999-09-30 1.8
1999-12-31 2
2000-03-31 2.3
2000-06-30 2.4
2000-09-30 2.4
2000-12-31 2.3
2001-03-31 2.2
2001-06-30 1.8
2001-09-30 1.5
2001-12-31 1.3
2002-03-31 1
2002-06-30 1.1
2002-09-30 1.1
2002-12-31 1.1
2003-03-31 1.1
2003-06-30 1
2003-09-30 0.9
2003-12-31 0.9
2004-03-31 1.1
2004-06-30 1.4
2004-09-30 1.8
2004-12-31 2.1
2005-03-31 2.2
2005-06-30 2.2
2005-09-30 2
2005-12-31 1.8
2006-03-31 1.8
2006-06-30 1.8
2006-09-30 1.9
2006-12-31 2.1
2007-03-31 2.4
2007-06-30 2.5
2007-09-30 2.8
2007-12-31 2.9