Quarter	Percent
1975-03-31	10
1975-06-30	9.56
1975-09-30	10.38
1975-12-31	10.72
1976-03-31	8.16
1976-06-30	11.09
1976-09-30	12.88
1976-12-31	14.75
1977-03-31	9.25
1977-06-30	7.34
1977-09-30	5.75
1977-12-31	6.69
1978-03-31	6.22
1978-06-30	9.78
1978-09-30	9.16
1978-12-31	11.88
1979-03-31	12.75
1979-06-30	14.25
1979-09-30	14.2
1979-12-31	17.28
1980-03-31	18.09
1980-06-30	17.28
1980-09-30	16.13
1980-12-31	14.5
1981-03-31	11.72
1981-06-30	11.59
1981-09-30	15.75
1981-12-31	14.63
1982-03-31	13.13
1982-06-30	12.53
1982-09-30	10.13
1982-12-31	10.06
1983-03-31	10.53
1983-06-30	9.52
1983-09-30	9.44
1983-12-31	8.98
1984-03-31	8.53
1984-06-30	8.81
1984-09-30	10.38
1984-12-31	9.38
1985-03-31	12.81
1985-06-30	12.28
1985-09-30	11.34
1985-12-31	11.33
1986-03-31	11.37
1986-06-30	9.82
1986-09-30	10.13
1986-12-31	10.82
1987-03-31	9.76
1987-06-30	8.89
1987-09-30	10
1987-12-31	8.39
1988-03-31	8.33
1988-06-30	9.1
1988-09-30	11.65
1988-12-31	12.68
1989-03-31	12.62
1989-06-30	13.6
1989-09-30	14.22
1989-12-31	13.74
1990-03-31	14.68
1990-06-30	14.65
1990-09-30	14.61
1990-12-31	13.73
1991-03-31	12.1
1991-06-30	11.16
1991-09-30	10.29
1991-12-31	10.28
1992-03-31	10.13
1992-06-30	9.72
1992-09-30	8.56
1992-12-31	6.59
1993-03-31	5.69
1993-06-30	5.65
1993-09-30	5.71
1993-12-31	5.1
1994-03-31	4.91
1994-06-30	4.91
1994-09-30	5.21
1994-12-31	5.93
1995-03-31	6.1
1995-06-30	6.47
1995-09-30	6.65
1995-12-31	6.4
1996-03-31	5.91
1996-06-30	5.65
1996-09-30	5.69
1996-12-31	5.97
1997-03-31	6.02
1997-06-30	6.49
1997-09-30	6.98
1997-12-31	7.22
1998-03-31	7.26
1998-06-30	7.43
1998-09-30	7.22
1998-12-31	5.94
1999-03-31	5.13
1999-06-30	4.86
1999-09-30	5.2
1999-12-31	5.39
2000-03-31	5.88
2000-06-30	5.8
2000-09-30	5.89
2000-12-31	5.82
2001-03-31	5.45
2001-06-30	5.09
2001-09-30	4.51
2001-12-31	3.96
2002-03-31	3.91
2002-06-30	3.84
2002-09-30	3.82
2002-12-31	3.96
2003-03-31	3.62
2003-06-30	3.6
2003-09-30	3.58
2003-12-31	3.85
2004-03-31	4.07
2004-06-30	4.54
2004-09-30	4.75
2004-12-31	4.75
2005-03-31	4.79
2005-06-30	4.75