Quarter	Percent
1975-03-31	9.97
1975-06-30	9.75
1975-09-30	10.56
1975-12-31	10.63
1976-03-31	8.39
1976-06-30	11
1976-09-30	12.91
1976-12-31	13.63
1977-03-31	8.88
1977-06-30	7.64
1977-09-30	5.5
1977-12-31	6.34
1978-03-31	6.66
1978-06-30	9.88
1978-09-30	9.44
1978-12-31	12.22
1979-03-31	12
1979-06-30	13.92
1979-09-30	14.16
1979-12-31	16.75
1980-03-31	17.7
1980-06-30	16.27
1980-09-30	15.16
1980-12-31	14.25
1981-03-31	11.31
1981-06-30	11.97
1981-09-30	15.78
1981-12-31	14.84
1982-03-31	12.69
1982-06-30	12.34
1982-09-30	9.83
1982-12-31	9.94
1983-03-31	10.28
1983-06-30	9.38
1983-09-30	9.08
1983-12-31	8.86
1984-03-31	8.41
1984-06-30	9.06
1984-09-30	10.09
1984-12-31	9.14
1985-03-31	12.5
1985-06-30	12
1985-09-30	11.13
1985-12-31	11.23
1986-03-31	10.97
1986-06-30	9.4
1986-09-30	10.22
1986-12-31	10.68
1987-03-31	9.55
1987-06-30	8.87
1987-09-30	9.87
1987-12-31	8.39
1988-03-31	8.24
1988-06-30	9.56
1988-09-30	11.56
1988-12-31	12.64
1989-03-31	12.57
1989-06-30	13.61
1989-09-30	14.16
1989-12-31	13.35
1990-03-31	14.6
1990-06-30	14.35
1990-09-30	14.32
1990-12-31	13.35
1991-03-31	11.69
1991-06-30	10.77
1991-09-30	9.9
1991-12-31	10.28
1992-03-31	10.36
1992-06-30	9.58
1992-09-30	8.36
1992-12-31	6.58
1993-03-31	5.59
1993-06-30	5.61
1993-09-30	5.61
1993-12-31	5
1994-03-31	4.97
1994-06-30	4.97
1994-09-30	5.63
1994-12-31	6.3
1995-03-31	6.33
1995-06-30	6.68
1995-09-30	6.58
1995-12-31	6.28
1996-03-31	5.85
1996-06-30	5.58
1996-09-30	5.69
1996-12-31	6.22
1997-03-31	6.18
1997-06-30	6.66
1997-09-30	7.06
1997-12-31	7.31
1998-03-31	7.26
1998-06-30	7.55
1998-09-30	7.08
1998-12-31	5.88
1999-03-31	5.01
1999-06-30	4.88
1999-09-30	5.32
1999-12-31	5.69
2000-03-31	6.01
2000-06-30	5.98
2000-09-30	5.91
2000-12-31	5.79
2001-03-31	5.27
2001-06-30	5.13
2001-09-30	4.34
2001-12-31	3.92
2002-03-31	4.03
2002-06-30	4
2002-09-30	3.83
2002-12-31	3.9
2003-03-31	3.52
2003-06-30	3.53
2003-09-30	3.61
2003-12-31	3.93
2004-03-31	4.24
2004-06-30	4.74
2004-09-30	4.8
2004-12-31	4.76
2005-03-31	4.85
2005-06-30	4.69