Month Percent 1982-01-31 3.08 1982-02-28 3.17 1982-03-31 2.83 1982-04-30 2.89 1982-05-31 3.01 1982-06-30 3.07 1982-07-31 3.09 1982-08-31 2.98 1982-09-30 2.96 1982-10-31 2.75 1982-11-30 2.63 1982-12-31 2.73 1983-01-31 2.51 1983-02-28 2.49 1983-03-31 2.51 1983-04-30 2.49 1983-05-31 2.72 1983-06-30 2.97 1983-07-31 3.19 1983-08-31 3.22 1983-09-30 3.13 1983-10-31 3.1 1983-11-30 3.08 1983-12-31 3.11 1984-01-31 3.14 1984-02-29 3.2 1984-03-31 3.35 1984-04-30 3.26 1984-05-31 3.34 1984-06-30 3.55 1984-07-31 3.8 1984-08-31 3.71 1984-09-30 3.69 1984-10-31 3.41 1984-11-30 3.3 1984-12-31 3.26 1985-01-31 3.37 1985-02-28 3.28 1985-03-31 3.19 1985-04-30 3.39 1985-05-31 3.5 1985-06-30 3.59 1985-07-31 3.62 1985-08-31 3.55 1985-09-30 3.54 1985-10-31 3.59 1985-11-30 3.7 1985-12-31 3.78 1986-01-31 3.97 1986-02-28 3.86 1986-03-31 3.85 1986-04-30 3.6 1986-05-31 3.36 1986-06-30 3.42 1986-07-31 3.59 1986-08-31 3.61 1986-09-30 3.67 1986-10-31 3.93 1986-11-30 3.99 1986-12-31 3.94 1987-01-31 3.87 1987-02-28 3.66 1987-03-31 3.47 1987-04-30 3.55 1987-05-31 3.68 1987-06-30 3.87 1987-07-31 3.95 1987-08-31 4.1 1987-09-30 4.16 1987-10-31 4.45 1987-11-30 4.06 1987-12-31 3.94 1988-01-31 4.15 1988-02-29 3.96 1988-03-31 3.93 1988-04-30 3.81 1988-05-31 3.86 1988-06-30 3.91 1988-07-31 3.97 1988-08-31 3.94 1988-09-30 4 1988-10-31 3.81 1988-11-30 3.69 1988-12-31 3.82 1989-01-31 3.81 1989-02-28 3.62 1989-03-31 3.53 1989-04-30 3.66 1989-05-31 3.69 1989-06-30 3.87 1989-07-31 3.67 1989-08-31 3.54 1989-09-30 3.61 1989-10-31 3.74 1989-11-30 3.73 1989-12-31 3.72 1990-01-31 3.81 1990-02-28 4.01 1990-03-31 4.23 1990-04-30 4.33 1990-05-31 4.34 1990-06-30 4.31 1990-07-31 4.47 1990-08-31 4.41 1990-09-30 4.44 1990-10-31 4.47 1990-11-30 4.31 1990-12-31 4.22 1991-01-31 4.25 1991-02-28 4.25 1991-03-31 4.26 1991-04-30 4.18 1991-05-31 4.23 1991-06-30 4.34 1991-07-31 4.4 1991-08-31 4.4 1991-09-30 4.23 1991-10-31 4.23 1991-11-30 4.26 1991-12-31 4.39 1992-01-31 4.34 1992-02-29 4.3 1992-03-31 4.47 1992-04-30 4.59 1992-05-31 4.45 1992-06-30 4.37 1992-07-31 4.47 1992-08-31 4.69 1992-09-30 4.64 1992-10-31 3.94 1992-11-30 3.62 1992-12-31 3.79 1993-01-31 3.7 1993-02-28 3.4 1993-03-31 3.21 1993-04-30 3.23 1993-05-31 3.35 1993-06-30 3.36 1993-07-31 3.29 1993-08-31 3.19 1993-09-30 3.08 1993-10-31 2.99 1993-11-30 2.95 1993-12-31 2.79 1994-01-31 2.74 1994-02-28 2.89 1994-03-31 3.14 1994-04-30 3.27 1994-05-31 3.51 1994-06-30 3.78 1994-07-31 3.83 1994-08-31 3.79 1994-09-30 3.84 1994-10-31 3.84 1994-11-30 3.83 1994-12-31 3.84 1995-01-31 3.89 1995-02-28 3.87 1995-03-31 3.86 1995-04-30 3.79 1995-05-31 3.58 1995-06-30 3.58 1995-07-31 3.61 1995-08-31 3.52 1995-09-30 3.46 1995-10-31 3.65 1995-11-30 3.54 1995-12-31 3.45 1996-01-31 3.42 1996-02-29 3.57 1996-03-31 3.7 1996-04-30 3.66 1996-05-31 3.74 1996-06-30 3.8 1996-07-31 3.72 1996-08-31 3.59 1996-09-30 3.57 1996-10-31 3.41 1996-11-30 3.42 1996-12-31 3.41 1997-01-31 3.45 1997-02-28 3.25 1997-03-31 3.42 1997-04-30 3.55 1997-05-31 3.52 1997-06-30 3.62 1997-07-31 3.58 1997-08-31 3.58 1997-09-30 3.49 1997-10-31 3.18 1997-11-30 3.21 1997-12-31 3.05 1998-01-31 3 1998-02-28 2.92 1998-03-31 2.87 1998-04-30 2.94 1998-05-31 2.98 1998-06-30 2.96 1998-07-31 2.88 1998-08-31 2.75 1998-09-30 2.66 1998-10-31 2.68 1998-11-30 2.38 1998-12-31 2.08 1999-01-31 1.95 1999-02-28 1.83 1999-03-31 1.8 1999-04-30 1.64 1999-05-31 1.89 1999-06-30 1.87 1999-07-31 1.85 1999-08-31 2.13 1999-09-30 2.22 1999-10-31 2.19 1999-11-30 2.06 1999-12-31 2.02 2000-01-31 2.22 2000-02-29 2.37 2000-03-31 2.37 2000-04-30 2.47 2000-05-31 2.51 2000-06-30 2.51 2000-07-31 2.54 2000-08-31 2.71 2000-09-30 2.78 2000-10-31 2.84 2000-11-30 2.83 2000-12-31 2.67 2001-01-31 2.62 2001-02-28 2.73 2001-03-31 2.79 2001-04-30 2.89 2001-05-31 2.84 2001-06-30 2.81 2001-07-31 2.94 2001-08-31 2.73 2001-09-30 2.68 2001-10-31 2.57 2001-11-30 2.42 2001-12-31 2.75 2002-01-31 2.64 2002-02-28 2.5 2002-03-31 2.49 2002-04-30 2.37 2002-05-31 2.38 2002-06-30 2.24 2002-07-31 2.33 2002-08-31 2.26 2002-09-30 2.15 2002-10-31 2.25 2002-11-30 2.17 2002-12-31 2.03 2003-01-31 1.7 2003-02-28 1.2 2003-03-31 1.25 2003-04-30 1.13 2003-05-31 0.93 2003-06-30 0.75 2003-07-31 1.04 2003-08-31 1.36 2003-09-30 1.54 2003-10-31 1.64 2003-11-30 1.75 2003-12-31 1.39 2004-01-31 1.31 2004-02-29 1.39 2004-03-31 1.12 2004-04-30 1.42 2004-05-31 1.67 2004-06-30 1.86 2004-07-31 1.89 2004-08-31 1.7 2004-09-30 1.53 2004-10-31 1.38 2004-11-30 1.53 2004-12-31 1.54 2005-01-31 1.57 2005-02-28 1.61 2005-03-31 1.92 2005-04-30 1.76 2005-05-31 1.76 2005-06-30 1.89 2005-07-31 1.69 2005-08-31 1.64 2005-09-30 1.33 2005-10-31 1.3 2005-11-30 1.34